B.Sc Plant Biology and Biotechnology Question Paper

Loyola College B.Sc. Plant Biology and Biotechnology Nov 2009 Botany-I Question Paper PDF Download

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Principles Of Horticulture Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIRST SEMESTER – NOVEMBER 2010

PB 1507/PB 1504 – PRINCIPLES OF HORTICULTURE

 

 

 

Date : 12-11-10                     Dept. No.                                                   Max. : 100 Marks

Time : 1:00 – 4:00

PART – A (20 marks)

ANSWER  ALL THE QUESTIONS

  1. Choose the correct answer                                                                                                      (5 x 1 =5)
    1. Olericulture is the study of
  2. Flowers b) Fruits        c) Vegetables           d) Gardens.
  1. Shade nets are used in
  1. Store house b) Mist chamber        c) Hot beds    d) Glass house.
  1. The plant that is suitable for hedge is
  1. Sunflower          b) Roses                    c) Jasmine    d) Thevetia.
  1. The plant that is commonly used in Topiary is
  1. Casuarina           b)  Nerium                c)  Balsam    d)  Cassia.
  2. Which of the following is not suitable for cut flower?
  3. a) Rose b) Lily                        c) Carnation             d) Jasmine.

 

  1. State whether the following statements or True or False:             (5×1=5)
  2. The Botanical garden in Ooty is a symmetrical type of garden.
  1. The best soil mixture is a mixture of sand and clay.
  2. A series of interlinked arches are known as tubs.
  3. Rangoli is also known as floral carpets.
  4. Floriculture is the study of floral arrangement.

 

III. Complete the following:                                                                                                             (5×1=5)

  1.  ________________ is the best method of irrigation for lawns.
  2. Compost making using earthworm is known as _______________.
  3. The flowering plant that is most suitable as an edge plant is __________.
  4. The art of shaping the plants is ________________.
  5. ___________ is added in the water to prolong the shelf life of cut flowers.

 

  1. Answer ALL, each in about 50 words.             (5×1=5)
  1. Define Pomology.
  2. Mention the importance of hotbeds.
  3. What is Terrace gardening?
  4. Differentiate between pruning and pinching.
  5. What is commercial floriculrue?

PART – B

Answer the following, each within 500 words,

 Draw diagrams wherever necessary.                                                                               (5×7=35 marks)

  1.  a) How will you classify the vegetables based on the morphology?

(OR)

  1. What is Hydroponics? Explain the different types.

 

  1.  a) What is organic farming?  Explain organic farming and mention its advantages.

(OR)

  1. b) What is cuttage? Explain the various types of stem cuttings with an example for each.

 

  1.  a) What is terrarium?  How will you prepare and maintain terrarium?

(OR)

  1. b) What is Bonsai? Explain the different styles of bonsai.

 

  1.  a) What is staking?  Explain the different methods.

(OR)

  1. b) What is mulching? Explain the different materials that are used for mulching and the

importance of mulching.

 

  1.  a) Explain the methods of propagation of rose.

(OR)

  1. b) Discuss the export potential of ornamental flowers in India.

 

PART – C

 

Answer any THREE of the following, each within 1500 words only.

Draw diagrams and flowcharts wherever necessary.                                                  (3×15=45 marks)

 

  1. Explain the classification of fruits based on the climate and habit.  Describe the importance of manuring and pruning in fruit plants and the different methods of fruit picking.

 

  1. Define layering and grafting and explain the different methods.

 

  1. Explain the importance of water garden and rockery, the methods of preparation and the plants that are commonly grown in water garden and rock garden.

 

  1. Describe the different types of flower arrangements and the flowers that are commonly used and their purpose.

 

  1. Explain the different methods of Japanese floral arrangements.

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Plant Physiology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – NOVEMBER 2010

PB 5515 – PLANT PHYSIOLOGY

 

 

 

Date : 29-10-10                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

                                                              PART – A                                                                (20marks)

Answer ALL the questions                                                                                (5×1=5)

  1. Choose the correct answer
  2. The adsorption of water by hydrophyllic colloids is known as
  3. a) Osmosis b) Imbibition             c) Plasmolysis          d) Turgidity
  4. Magnesium is essential for the formation of which pigment?
  5. a) Phycobilins b) Carotenes              c) Chlorophyll         d) xanthophyll
  6. Non-cyclic photophosphorylation requires
  7. a) PS I b) PS II                    c) PS I&PSII           d) Noneof these
  8. Glycolysis takes place in the
  9. a) Mitochondria b) Chloroplast          c) Cytoplasm          d) Nucleus
  10. Ripening of fruits is associated with
  11. a) Gibberellins b) Cytokinins            c) Ethylene             d) Auxin

 

  1. State whether the following statements are True or False.     (5×1=5)
  2. Silicone oils act as Antitranspirants .
  3. Donnan equilibrium is an example of passive absorption.
  4. Lysosomes are involved in Photorespiration.
  5. The light reaction takes place in the stroma of the chloroplast.
  6. Florigen is a flowering hormone.

III. Complete the following                                                                                                              (5×1=5)

  1. Exudation of water from plants in the form of liquid is called_______.
  2. Active absorption of solutes requires metabolic ___________.
  3. Kranz anatomy is observed in _________plants.
  4. Symbiotic nitrogen fixation is carried out by the bacterium________.
  5. An example of a Short Day plant is _________.

 

 

  1. Answer the following each in 50 words.                         (5×1=5)
  2. What is Symplast?
  3. What is meant by Photolysis of water?
  4. Give two deficiency symptoms of Boron.
  5. Mention any two effects of drought on plants.
  6. Define transamination.

PART-B                                      (5×7=35marks)

Answer the following each answer not exceeding 500 words.

Draw diagrams wherever necessary.

  1. a).Describe the types of transpiration and state its significance.

(or)

  1. b) Show the relationship between the components of Water potential.
  2. a). Mention any two symptoms of any three Macroelements.

(or)

  1. b) Explain Donnan equilibrium.
  2. a).Explain Cyclic Photophosphorylation.

(or)

  1. b) Discuss the metabolism of CAM plants.
  2. a) Draw the Krebs cycle and tabulate the number of ATP produced.

(or)

  1. b) Highlight the mechanism of Photorespiration.
  2. a) Enumerate the applications of Gibberellins.

(or)

  1. b) Discuss the phenomenon of Vernalisation.

PART- C                                            (3×15=45marks)

  Answer any Three of the following, each answer not exceeding 1200 words. 

   Draw diagrams wherever necessary.

  1. Trace the path of water from the time it enters the root hair and reaches the leaves.
  2. Write notes on the mechanism of absorption of mineral salts.
  3. Explain the mechanism of symbiotic Nitrogen fixation. Highlight the importance of Nitrogen to

plants.

  1. Trace the path of carbon via the Calvin cycle.
  2. Define Dormancy.Explain the factors causing dormancy and the methods to break dormancy.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Plant DIVersity – I (Algology, Mycology, Bryology) Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIRST SEMESTER – NOVEMBER 2010

                    PB 1505/PB 1502 /PB 1500- PLANT DIVERSITY – I (ALGOLOGY, MYCOLOGY, BRYOLOGY)

 

 

 

Date : 10-11-10                     Dept. No.                                                    Max. : 100 Marks

Time : 1:00 – 4:00

 

         PART – A(20 marks)

 

ANSWER ALL QUESTIONS:                                                                  

  1. Choose the Correct Answer:                                     (5 x 1 = 5)

 

  1. Agar-agar is manufactured from
  2. Ectocarpus b) Polysiphonia        c) Sargassum                       d) Gelidium
  3. When Filaments of Anabaena break in small pieces of two or more cells, they are called
  4. Hormospores b) Hormogonia         c) Hypnospores        d) Hormocysts
  5. The habit of Volvox is
  6. a) Unicellular b) Filamentous         c) Thalloid                 d) Colonial
  7. Fungi which obtained food from dead organic material is called
  8. Parasitic b) Saprophytic                      c) Symbiotic              d) Predacious
  9. The endophytic algae present in the thallus of Anthoceros is
  10. a) Nostoc b) Vaucheria             c) Oscillatoria                        d) Volvox

 

  1. State whether the following are True or False:           (5 X 1 = 5)

 

  1. The fungus which is important in genetic studies is Rhizopus.
  2. Members of Hepaticopsida are popularly known as liverworts.
  3. The Zoospore of Albugo is reniform.
  4. Elaters are cells with spiral thickening that help in dispersing spores.
  5. The brown alga Ectocarpus contains a brown pigment called as Phycocyanin.

III. Complete the following:                                                                                                        (5 X 1 = 5)

  1. Lichen which possess leaf like thalli with lobed margins are called …………………..
  2. When motile gametes taking part in fusion are different in size, it is known as ………..
  3. Thallus with multinucleate, aseptate condition is said to be …………………
  4. The fruiting body of Polyporus is known as ……………………………………………
  5. The central fertile region of capsule of Funaria is called ………………………………
  6. Answer ALL, each in about 50 words:                       (5 X 1 = 5)
  7. What is Protonema?
  8. Write 2 lines on Heterocyst.
  9. What is Budding?
  10. Comment on Biofertilizers.
  11. Write any 2 economic importance of Algae.

PART – B

 

Answer the following each within 500 words.

Draw diagrams or flowcharts wherever necessary.                                            (5 X 7 = 35 marks)

 

  1. Explain any two life cycle patterns in algae. Substantiate your answer with schematic representation.

(OR)

Give the salient features of Chlorophycophyta.

 

  1. List five salient features of Vaucheria.

(OR)

Draw and describe the sporangia of Ectocarpus.

 

  1. Describe briefly any 3 sexual fruiting bodies you have studied in the fungi.

(OR)

Write short notes on:

  1. Nutrition of Fungi         b) Vegetative reproductive structures in fungi.

 

  1. Explain briefly the structure of thallus of Lichens.

(OR)

Explain the external and internal structures of the basidiocarp of Polyporus.

 

  1. Describe the Sporophyte of

(OR)

Comment on the sex organs of Bryophytes.

 

PART – C

 

Answer any three of the following each within 1200 words.

Draw diagrams or flowcharts wherever necessary.                                         (3 X 15 = 45 marks)        

  1. Write any three different kinds of a sexual reproductive methods in algae.
  2. Trace the Triphasic life cycle of Polysiphonia.
  3. Describe the salient features of any 3 classes in fungi.
  4. Explain the life cycle of Rhizopus.
  5. Compare the Sporophyte of Marchantia and Anthoceros.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Plant Biotechnology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – NOVEMBER 2010

PB 5518/PB 5512/PB 5504 – PLANT BIOTECHNOLOGY

 

 

 

Date : 09-11-10                     Dept. No.                                                   Max. : 100 Marks

Time : 9:00 – 12:00

PART – A (20 Marks)

 

  1. Choose and circle the best answers of the following:                                      (5 x 1= 5)

 

  1. Biotechnology can be defined as

(a) Science and technology                       (b) Biology and technology

(c) Production of a product from biological organisms using technology

(d) Production of a product using different technology from plants and animals

 

  1. Early attempts to derive callus, scientist used

(a) Tobacco pith cells and carrot cambial cells               (b) Cauliflower

(c) Shoot tip of tobacco                                                       (d) Carrot cambial cells

 

  1. Virus free plants can be derived using
  • Embryo culture (b) Mericulture          (c) Anther Culture    (d) Leaf disc culture

 

  1. The most conventional and natural method for gene transfer is by

(a) Biolistic gun  (b) Microinjection    (c) Agrbacterium mediated     (d) Electroporation

 

  1. GUS gene used in DNA technology is

(a) Marker gene        (b) Molecular marker    (c) Silence gene     (d) Jumping gene

 

  1. State whether the statements are TRUE or FALSE.                         (5 x 1 = 5)

 

  1. Sodium Hypochloride is a surface sterilising agent.
  2. Immobilised cells are called as synthetic seeds.
  3. Anabaena is a soil bacteria used as vector in Bt cotton.
  4. Taq DNA polymerase cleaves deoxyribonucleic acid.
  5. QTL is one the target for crop improvement.

   III. Complete the following                                                                                            (5 x 1 = 5)     

 

  1. Determination of cell growth by turbidity in a suspension culture system is known as

_________.

 

  1. A ring like vascular structure that develops inside callus is called as __________.

 

  1. Agrabacterium tumifaciens when causes Crown gall disease in plant the T-DNA triggers

the production of ____________ and ___________.

 

  1. Most important enzyme that is used in the construction of cDNA library is _______.

 

  1. Most important molecular tool in Crop Improvement studies is _____________.

 

  1. Answer the following, each within 50 words only.             (5 x 1 = 5)

 

  1. What is an “explants”?
  2. Define Caulogenesis
  3. What is nif gene?
  4. Explain gene library
  5. Expand GMO? Give an example.

 

PART – B

 

Answer the following, each answer within 500 words. Draw diagrams and flowcharts

     wherever necessary.                                                                                             (5 x 7 =35 Marks)

 

  1. a) Write the historical mile stone of tissue culture in brief.

(OR)

  1.        b) Write short notes on components of tissue culture media.

 

  1. a) Describe how synthetic seeds are produced.

(OR)

  1.       b) Give short account on Anther culture.

 

  1. a) How Rhizobium interacts with legume plants at the molecular level.

(OR)

  1.       b) Write short notes on organization and function of Plant nuclear genome

 

  1. a) Define restriction enzyme. Explain its use in recombinant DNA technology

(OR)

  1.       b) Explain the process of Polymerase Chain Reaction in gene amplification

 

  1. a) What are various biotechnological strategies applied for crop improvement.

(OR)

  1.       b) Write the role of molecular markers in crop improvement.

 

              PART – C

 

Answer any three of the following, each with 1200 words. Draw diagrams and flowcharts

  wherever necessary.                                                                                                (3 x 15 = 45 Marks)

 

  1. Give a descriptive account on callus and cell suspension culture techniques.
  2. How protoplast is isolated, fused/manipulated and cultured.
  3. Describe how Agrobaterium is used in gene transfer.
  4. What are the different methods by which genes are directly transferred in to plants?

Describe methodology involved in Particle gun bombardment method.

 

  1. Write a detailed protocol to produce insect and herbicide resistant transgenic plants.

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Medical Microbiology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – NOVEMBER 2010

    PB 5405 – MEDICAL MICROBIOLOGY

 

 

 

Date : 11-11-10                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

Part A (20 marks)

 

Answer all the questions                                                                  

  1. Choose the correct answer: (5 x 1  = 5)
  2. Match A) Bordet             B) Von Behring          C) Ronald Ross           D) Widal

with  i) Malaria      ii) Typhoid      iii) Whooping cough               iv) Diphtheria

  1. a) A-iii, B-i, C-iv,      D) ii                   b) A-iii,   B-ii,      C-i,    D) iv
  2. c) A-iii, B-iv, C-ii,       D) i                    d) A-iii,   B-iv,     C-i,    D) ii
  3. TMP refers to ______________.
  4. Trimetaprim b. Tetramethoprim c. Trimethoprim           d. Trimesoprim
  5. Common pathogenic microbe present in Vagina
  6. Bacillus sp. b. Candida sp. c. Clostridium sp.        d. Pseudomonas sp.   
  7. Typhus fever caused by bacterium called _________
  8. E. coli b. Rickettsia typhi c. Samonella paratyphi a         d. Samonella paratyphi b
  9. HIV virus affect by _______________.
  10. Red blood cells b. White blood cells       c.  Platelet cells           d. Liver cells

 

  1. State whether the following statements are True or False: (5 x 1  = 5 )
  2. Autoclave is an instrument used in moist heat sterilization.
  3. Narrow spectrum means antibiotics kill only limited range of pathogens.
  4. The quantitative measure of pathogenicity as known as virulence.
  5. Mycobacterium tuberculosis was first discovered by Robert Koch.
  6. Tetanus is caused by the bacterium

 

III. Complete the following:                                                                                                           (5 x 1  = 5 )

  1. Phenol is otherwise called as _________
  2. Penicillin obtained from ___________ ___________.
  3. Inhibition of the growth of bacterial pathogens is called as ___________.
  4. VZV refer to________________________.
  5. Causal organism of Malaria is ____________

 

 

 

  1. Answer the following in about 50 words: (5 x 1 = 5)
  2. Mention the names of any two filters used in filtration.
  3. Define
  4. What is microbiota?
  5. What do you mean by Opportunistic pathogen?
  6. mention any two dermatophytic fungi.

 

Part B

 

Answer the following each in about 350 words. Draw necessary diagrams:           

                                   (5 x 7= 35)

  1. Discuss the importance of radiation as physical method of microbial control.

or

  1. Write about the importance of halogens and heavy metals in the control of microbes.
  2. Write about the source, mode of action and application of streptomycin.

or

  1. Explain about mode of action of cephalosporins.
  2. Describe the general features of normal microbial flora of human body.

or

  1. Discuss about the factors which influence infection.
  2. Write about the habit, structure and multiplication of Entamoeba histolytica.

or

  1. Write about the causative agent, treatment and vaccines of cholera.
  2. Write about the causal organism, symptoms and prevention of syphilis.

or

  1. Describe the symptoms and treatment of Tetanus.

 

Part C

Answer any three of the following questions each in about 1200 words. Draw necessary diagrams:          

                               (3 x 15 = 45)

  1. Write about the usefulness of high and low temperature in controlling microbes.
  2. Write about the mode of action and application of sulfonamides.
  3. Describe about any two antigen and antibody reactions.
  4. Discuss the morphology of the causal organism of tuberculosis. Write about its symptoms and treatment.
  5. Write about the mode of transmission, pathogenesis and prevention of AIDS.

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Immunology And Immuno Technology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – NOVEMBER 2010

    PB 5406 – IMMUNOLOGY AND IMMUNO TECHNOLOGY

 

 

 

Date : 11-11-10                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART A (20 marks)

 

Answer all questions.

 

  1. Choose the correct answer: (5 x 1 = 5)

 

  1. Vaccine against rabies was first developed by
  2. a) Koch b) Pasteur                    c) Jenner                     d) Kohler
  3. Paratope is seen in the
  4. a) antigen b) immunogen                        c) hapten                     d) antibody
  5. Reaction of membrane bound antigen with labeled antibody is done in
  6. a) Macini method b) RIA                          c) Immunoblotting      d) ELISA
  7. Which of the following cells are involved in cytotoxicity?
  8. a) Helper T cells b) Killer T cells                        c) Plasma cells                        d) Memory B cells
  9. Hybridoma technology was first developed by
  10. a) Kohler b) Mittelman               c) Yallow                     d) Prescott

 

 

  1. State whether the following statements are true or false: (5 x 1 = 5)

 

  1. Secretion of HCl in the stomach is an example for anatomical barrier.
  2. All allergens are antigens.
  3. Radial immunodiffusion involves radioactively labeled antibodies.
  4. Naive B cells are those which have not been in contact with any antigens.
  5. Myeloma cells are used in hybridoma technology because they are immortal.

 

 

III. Complete the following:                                                                                                                     (5 x 1  = 5 )

 

  1. OPV and IPV are administered to confer immunity against _________.
  2. The molecular weight of heavy chain is __________.
  3. Reaction of insoluble antigen with soluble antibody is called ________.
  4. B cells which can recognize antigens on subsequent entry are called ________..
  5. HAT medium is used to culture ___________ .

 

  1. Answer the following, each in about 50 words: (5 x 1= 5)

 

  1. Mention any two contribution of Landsteiner.
  2. List any two features of IgM.
  3. Define haemagglutination.
  4. Define plasma cells.
  5. What is serum?

 

PART  B

 

Answer the following, each answer not exceeding 350 words. Draw diagrams wherever necessary:                                                                                                                                                                          ( 5 x 7= 35)

 

  1. Give an account of the contribution of Pasteur and Koch.

(or)

  1. Write short notes on immunization schedule.
  2. Explain briefly about antigens and their properties.

(or)

  1. Explain the structure of a typical antibody molecule.
  2. Give an account of immunoelectrophoresis.

(or)

  1. Write short notes on immunodiffusion.
  2. Discuss briefly about cytokines and their importance.

(or)

  1. Write short notes on T lymphocytes.
  2. What are polyclonal antibodies? Explain the method involved in their production.

(or)

  1. Explain the methods involved in the production of antiserum.

 

PART C

 

Answer any three of the following, each answer not exceeding 1200 words. Draw diagrams wherever necessary:                                                                                                                                                    (3 x 15= 45)

 

  1. Describe in detail about innate and adaptive immunity.
  2. Explain in detail about immunoglobulins, their classification and properties.
  3. Discuss in detail about immunoblotting technique.
  4. Explain in detail about the organs of immune system.
  5. Describe the steps involved in the production of monoclonal antibodies.

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Herbal And Ethanobotany Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – NOVEMBER 2010

PB 5517/PB 5511/PB 5503 – HERBAL AND ETHANOBOTANY

 

 

 

Date : 03-11-10                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART – A (20 MARKS)

 

ANSWER ALL QUESTIONS:                                                                  

  1. Choose the Correct Answer: (5 X 1 = 5)

 

  1. The impact of worship of trees as sacred grooves contribute to
  2. Conservation of biodiversity b) agroforestry                        c) social beliefs
  3. d) herbal medicine
  4. One of the following is not a method used commonly in Ethnobotancial studies
  5. Herbaria b) Musea    c) Sculptures         d) Conservation of plants
  6. Vasicine an alkaloid is found in
  7. a) Adathoda b) Azadirachta   c) Eclipta      d) Datura
  8. Poultices generally include a binding material like
  9. Rice flour   b) Diatomaceous earth   c) Plaster of paris   d) Gum arabica
  10. One of the following is a rhizome
  11. a) Ocimum b) Zingiber      c) Ricinus        d) Vinca

 

  1. State whether the following are True or False: (5 X 1 = 5)

 

  1. Ethnotaxonomy deals with folk concepts of classification.
  2. Siddha is an Indian system of medicine prevalent in North India
  3. The fruit of Ricinus communis has mericarps.
  4. Tannins are natural products extracted from trees for medicinal purposes.
  5. Ethnobotanist who work on healing with herbs are called Shamans or Vaidyars.

III. Complete the following:                                                                                                             (5 X 1 = 5)

 

  1. Todas and Irulas are supposed to have originated from —————— hills.
  2. The oil distilled from Coriandrum can be used as ..………..
  3. Ethnobotany which deals with origin and human use of fungi from ancient times is called ……………….
  4. …………………… Vedas dating back to 4000 B.C have described many medicinal plants.
  5. —————- is a volatile oil.
  6. Answer ALL, each in about 50 words: (5 X 1 = 5)
  7. What are Salves?
  8. What are Compressers?
  9. Write down the Medicinal use of
  10. Mention the importance of Musea.
  1. What is Hydrotherapy?

 

PART – B

 

Answer the following each within 500 words. Draw diagrams or flowcharts wherever necessary.                                                                                                                                                   (5 X 7 = 35 marks)

  1. Explain briefly the various ways in which adulteration of herbal preparation is done.

(OR)

List the various parameters used for organoleptic evaluation of drugs.

 

  1. Explain the organoleptic properties of Datura .

(OR)

Mention the active principle and medicinal uses of Vinca rosea and Zingiber officinale.

 

  1. Write notes of interest on herbal preparation with respect to Herbal oil and Glycerites.

(OR)

Explain the extraction process for Resins & Tannins.

 

  1. Describe briefly the importance of Ethnobotany and health with special reference to Siddha and Ayurveda.

(OR)

Define Ethnobotany. Bring out its scope in various fields.

 

  1. Comment on the export potential of herbs.

(OR)

Explain how the  traditional knowledge can be protected through Intellectual property right.

 

PART – C

 

Answer any three of the following each within 1200 words.

Draw diagrams or flowcharts wherever necessary.                                                      (3 X 15 = 45 marks)       

  1. Explain how microscopic and physical evaluation of drug is carried out to detect adulteration.

 

  1. Describe the chemical and anatomical characterization of Emblica officinalis. Add a note on its medicinal uses.

 

  1. Write notes of interest on
  2. Volatile oils b) Elixirs          c) Slippery elm & slurry          d) Gruel.

 

  1. Explain the various methodologies used in Ethnobotancial studies.
  2. Explain the traditional knowledge on
  3. a) Disease diagnosis       b) Plant conservation & cultivation.

 

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Genetics, Plant Breeding And Evolution Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – NOVEMBER 2010

PB 5516/PB 5510/PB 5506 – GENETICS, PLANT BREEDING AND EVOLUTION

 

 

 

Date : 01-11-10                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART – A (20 marks)

      Answer ALL questions.

 

  1. I. Choose the correct answer             (5×1=5)

 

  1. Cross  of  F1  individual with the recessive parent is known as a cross.
  2. a)  test            b) back                c) dihybrid                       d) Monohybrid
  3. Which of the following are the stop codons?
  4. a) UAA ,UGA , UAG  b)UCC, UAA,UCA  c)UAA, UAG,UCA  d) UAA, UAC, UCA
  5. The genetic condition of   individuals with Klienfelter’s syndrome is
  6. a) XYY           b) XXX               c) XXY                  d) XY
  7. The term heterosis was coined by
  8. a) Bruce         b) Shull               c) Nilsson             d) Johannsen
  9. Charles Darwin went on a voyage on a ship named
  10. a) HMS Eagle b) HMS Beagle         c) HMS Bugle        d) HMS Titanic

 

  1. State whether the following statements are True or False (5×1=5)

 

  1. Cytoplasmic male sterility in maize is attributed to the female parent.
  2. The start codon AUG codes for Methionine.
  3. Transition is a base change that changes the Pyrimidine – Purine orientation.
  4. Heterosis results from the crossing of genetically unlike organisms.
  5. Mutation does not play a part in evolution.

III. Complete the following                                                                                              (5×1=5 )

 

  1. Lethal genes in plants  was first reported in __________.
  2. Negative superhelicity in E.coli DNA is brought  about  by the enzyme ____
  3. ___________   coined  the term mutation.
  4. The progeny of a single cross- pollinated plant obtained by selfing is  called

_____________.

 

  1. Inorganic evolution explains the changes that take place in _________.

 

  1. Answer the following, each within 50 words only                                    (5×1=5)

 

  1. Define an Allele
  2. What is Genetic code?
  3. Write about Point mutation.
  4. Write short notes on Emasculation.
  5. What is Speciation?

 

PART – B

 

Answer the following, each answer within 350 words . Draw diagrams wherever necessary.

 

(5X7=35marks)

 

  1. a) Explain the second law of Mendel using a dihybrid cross.

(OR)

  1. b) With a suitable example, explain Incomplete dominance in plants.

 

  1. a) How is the hnRNA post transcriptionaly modified into a homogenous mRNA?

(OR)

  1. b) Explain regulation of gene expression in coli.

 

  1. a) What is polyploidy ? Briefly explain auto polyploidy and allopolyploidy.

(OR)

  1. b) Explain the different types of chromosomal aberrations.

 

  1. a) List out the positive and negative effects of heterosis.

(OR)

  1. b) What are the various steps involved in hybridization procedure to obtain F1 generation?

 

  1. a) Discuss the theory of natural selection.

(OR)

  1. b) Critically comment on Neo-Lamarckism.

 

 

PART – C

 

Answer any three of the following, each answer within 1200  words .

Draw diagrams wherever necessary.                                                                             (3×15=45marks)

 

  1. What is polygenic inheritance ? With the help of  a  Punnet square explain the

inheritance of kernel colour in wheat.

  1. Enumerate the process of replication of DNA with suitable diagrams.
  2. Explain in detail the different light –independent DNA repair mechanisms.
  3. Discuss the methods of mass and pure line selection.
  4. Write an essay on mutation theory and synthetic theory.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Cell Biology And Anatomy Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

THIRD SEMESTER – NOVEMBER 2010

PB 3508/PB 3504 – CELL BIOLOGY AND ANATOMY

 

 

 

Date : 02-11-10                     Dept. No.                                                    Max. : 100 Marks

Time : 9:00 – 12:00

PART-A (20 Marks)

Answer ALL questions

 

  1. CHOOSE THE CORRECT ANSWER (5X1=5)
  2. Fibres occurring in the  region of phloem are otherwise known as:
  3. Bast b)   phloem  parenchyma    c)   companion cells      d) Sieve tube
  4. The chromosomes with the centromere at the proximal  end  is called
  5. Telocentric b) acrocentric             c)    metacentric                 d) acrocentric
  6. The site of protein synthesis is
  7. Ribosomes        b) nucleus           c)  cytoplasm                   d) Golgibodies
  8. Reduction in chromosome number occurs after
  9. Mitosis b) Meiosis            c) Linkage                      d) amitosis
  10. In Bignonia  the anomalous secondary growth  is due to
  11. Medullary bundle b) Cortical bundle    c) Included  phloem        d) Excluded phloem.

 

  1. State Whether the following statements are true or False:                                          (5×1=5)

 

  1. Lactiferous vessels are found in xylem.
  2. Number of vascular bundles in monocot stem is unlimited.
  3. Histones are basic
  4. Mitochondria is called the power house of a cell.
  5. The anomalous secondary structure in Achyranthes is inverted  cortical bundle.

III.  Complete the following                                                                                                          (5×1=5)

 

  1. The chromosome bearing knob – like appendages are called —————–.
  2. —————– is deposited in the endodermal cell wall.
  3. Xylem is a ——————permanent tissue.
  4. Photorespiration takes place in ——————–.
  5. Primary xylem in dicot root is —————-.
  6. Answer the following , each within 50 words only (5X1=5)

 

  1. What is raphide?
  2. Define Idiogram.
  3. Define amitosis.
  4. What is Bicollateral vascular bundle?
  5. What is Isobilateral leaf?

PART – B

 

Answer the following , each answer within 500 words ,

draw diagrams wherever necessary                                                                       (5×7=35 marks)

 

  1. a) Write an account on principles and applications of SEM.

(Or)

  1. b) Write an account on the principles and uses of TEM.
  2. a) Describe the structure of Lampbrush chromosome.

(Or)

  1. Describe the structure of Polytene chromosome.
  2. a) Explain the sub stages of Prophase I of meiosis.

(Or)

  1. b) Describe the stages of mitosis.
  2. a) Write an account on vascular cambium.

(Or)

  1. Describe the types of meristems.
  2. a) Write an account on nodal anatomy.

(Or)

  1. b) Describe the various stomatal types.

PART – C

 

Answer any three of the following , each with 1200 words ,

draw diagram wherever necessary .                                                                       (3X15=45 marks)

 

  1. Explain the Ultra structure and function   of chloroplast.
  2. Write a detailed account of Nucleic acids.
  3. Give a detailed account on Xylem.
  4. Discuss the theories related to apical organization in shoot.
  5. Describe the secondary growth in a dicot root.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology Nov 2010 Angiosperm, Taxonomy, Eco.Botany Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

THIRD SEMESTER – NOVEMBER 2010

                PB 3506/PB 3502 – ANGIOSPERM, TAXONOMY, ECO.BOTANY &

  EMBRYOLOGY

 

 

 

Date : 30-10-10                     Dept. No.                                                      Max. : 100 Marks

Time : 9:00 – 12:00

PART    –    A                                                       (20 marks)

 

Answer ALL questions:

 

  1. Choose the correct answer                                                                                                      (5 x 1 = 5)

 

  1. The basic unit in numerical taxonomy is
  2. OTU              b) variety              c) Strain                   d) Species
  3. Synandrium is characteristic feature of
  4. a) Orchidaceae b) Cucurbitaceae      c) Rubiaceae           d) Amaranthaceae                                                                                                                                                                                                                                 
  5. The useful part of saffron is
  6. a) Rhizome                                 b) Flower bud            c) Stigma                   d) Fruit
  7. Entry of pollen tube through integuments is
  8.     a) Porogamy                               b) Chalazogamy      c) Mesogamy             d) Xenogamy
  9. Ruminate endosperm is found in
  10. a) Areca                           b) Polygonum          c) Capsella               d) Malva
  11. State whether the following statements are True or False:                         (5 x 1 = 5)

 

  1. Species Plantarum was written by Bentham and Hooker.
  2. Gynandrophore is characteristic feature of Capparidaceae.
  3. The botanical name for Prosomillets is Panicum miliaceum.
  4. Endothecial layer is found in embryo sac.
  5. Occurrence of more than one embryo in a seed is polyembryony.

III.  Complete the following:                                                                                                            (5×1=5)

 

  1. Engler and Prantle system of classification is an example for ————————-.
  2. Presence of corona is characteristic of —————————————-.
  3.   Cedarwood oil is obtained from—————————————–.
  4.     Peperomia is an example of ———————————–.

15.The intermediate type of endosperm is also known as——————————-.

  1. Answer within 50 words. (5×1=5)

 

  1.   Define Holotype and Lectotype.
  2. Write short notes on cyathium.
  3. Give an account of condiments.
  4. Distinguish between Dichogamy and Herkogamy.
  5. Write short notes on nuclear endosperm.

PART – B                                            (5X7=35 marks)

 

ANSWER THE FOLLOWING,EACH ANSWER WITHIN 500 WORDS,DRAW DIAGRAMS   

   WHEREVER NECESSARY.

 

  1. a) Give an account on Linnaeus Classification.

(Or)

  1. b) Describe the importance of molecular systematics.
  2. a) Describe the salient features of Anacardiaceae.

(Or)

  1. b) Describe the salient features of
  2. a) What are millets?Give the botanical name,parts used and uses of any 3 millets.

(Or)

  1. b) Give the botanical name, family, uses and morphology of the useful parts of any 3

medicinal plants.

  1. a) Draw and describe the internal structure of mature anther.

(Or)

  1. Define pollination. Describe the contrivances for cross pollination
  2. a) What is double fertilization?  Give an   account of the post-fertilization changes.

Or

  1. b) Explain the development of embryo in

 

PART –   C                                             (3×15=45 marks)

 

ANSWER ANY THREE OF THE FOLLOWING,EACH WITH 1200 WORDS; DRAW DIAGRAMS WHEREVER NECESSARY

 

  1. Give the outline  classification of  Bentham and Hooker. Mention its merits and demerits.
  2. Describe the vegetative and  floral  features of  Orchidaceae. Add a note on their economic

importance.

  1. Give the binomial,family,uses,and morphology of their useful part of any 2 each of beverages,

narcotics, essential oil and timber -yielding plants.

  1. Describe in detail the structure and development of Bisporic and Tetrasporic embryo-sac.
  2. Write an essay on Polyembryony.

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Plant Physiology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – APRIL 2011

PB 5515/PB 5509/PB 5500 – PLANT PHYSIOLOGY

 

 

 

Date : 11-04-2011              Dept. No.                                                    Max. : 100 Marks

Time : 9:00 – 12:00

 

PART A(20 marks)

ANSWER ALL THE QUESTIONS

  1. Choose the correct answer                                                                                     (5 x 1 =5)
    1. The antitranspirant that induces complete stomatal closure is
  2. Gibberellic acid Auxin        c. Ethylene                d. Abscisic acid.
  3. The accessory pigments in photosynthesis is
  4. Anthocyanin Carotenoids         c. Bilirubin    d. Betacyanin.
  5. The raw material for Gluconeogenesis
  6. Glucose                          sucrose                 c. starch        d. fatty acid
  7. The plant hormone that is associated with inducing dormancy is
  8. Auxin   G A3                      c.  Cytokinin             d. Abscisic acid.
  9. The micro nutrient that is important for the synthesis of IAA is,
  10. Zinc Molybdenum                   c. Cobalt                   d. Iron.

 

  1. State whether the following statements are True or False:             (5×1=5)
  2. Chemiosmotic hypothesis explains the regeneration of ATP.
  3. Donnan membrane Equilibrium concept explains the absorption of mineral ions against the concentration gradient.
  4. Vernalization is the cold treatment which suppresses the flowering.
  5. CAM plants are also known as C4
  6. Apoplast includes the entire living component.

III. Complete the following:                                                                                                       (5×1=5)

  1. The hormone that induces chlorophyll biosynthesis is __________________.
  2. The mineral element _______________ is present in the centre of the chlorophyll pigment.
  3. Glycolysis takes place in the __________________ of the cell.
  4. _________________ is an obligate vernalization requiring plant.
  5. The ultimate donor of electron in photosynthesis is _________________.
  6. Answer all, each in about 50 words.                                     (5×1=5)
  7. What is Glycolate pathway?
  8. What is bioassay?

 

  1. Define Respiratory Quotient.
  2. Differentiate Apoplast and Symplast.
  3. Explain interveinal chlorosis and mention its causes.

 

PART B

Answer the following, each within 500 words, Draw diagrams wherever necessary.       (5×7=35)

  1. a) What is guttation?

(or)

  1. b) Define water potential and bring out the relationship between matrix potential, osmotic potential and pressure potentials.
  2. Explain how ammonia is assimilated in plants.

(or)

Draw and explain the symbiotic nitrogen fixation.

  1. Differentiate between passive and active absorption of mineral ions and explain any one hypothesis for each.

(or)

Explain the mechanism of photorespiration.

  1. Schematically represent the light reaction of photosynthesis and explain the important steps.

(or)

Bring out the differences between C3 and C4 plants.

  1. What is dormancy of seeds? Explain the various causes of dormancy.

(or)

What is stress physiology?  Explain the causes of stress in plants.

PART C                                

Answer any Three of the following, each within 1500 words only.

Draw diagrams and flowcharts wherever necessary.                                                   (3×15=45)

 

  1. Explain the Bioassay and physiological roles of auxins and gibberellins.
  2. What are macro and micro nutrients? Explain the occurrence, deficiency symptoms and the roles of any three macro and any three micro nutrients.
  3. Explain how a molecule of glucose is completely oxidized during aerobic respiration.
  4. Explain the path way of C3 photosynthesis and the significance of CAM plants.
  5. Explain the structure and the mechanism of opening and closing of stomatal apparatus. Explain the various hypothesis associated with stomatal movement.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Plant DIVersity – II (Pteri.,Gymno.,& Paleobot.) Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

SECOND SEMESTER – APRIL 2011

PB 2504/PB 2502/PB 2500 – PLANT DIVERSITY – II (PTERI.,GYMNO.,& PALEOBOT.)

 

 

 

Date : 08-04-2011              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A (20 marks)

Answer ALL the Questions

 

  1. Choose the correct answer:                                     (5 x 1 = 5 marks)

 

  1. Which one of the following shows leptosporangiate development
  2. a) Equisetum b) Lycopodium c) Marsilea                 d) Rhynia

 

  1. Maiden hair fern is
  2. a) Azolla b) Marsilea                c)Psilotum              d) Adiantum

 

  1. Vessels are present in
  2. a) Cycas b) Gnetum c) Pinus                     d) Psilotum

 

  1. Dwarf shoots of Pinus have 3 needles each on
  2. a) monophylla b) P. strobus c)  P. sylvestris                      d) P. longifolia

 

  1. Lepidodendron was found in which of the following period
  2. a) Carboniferous b) Triasic c) Jurassic                d) Pre Cambrian

 

 

  1. State whether the following statements are True or False: (5 x 1 = 5marks)

 

  1. The cortical cells of Psilotum rhizome is characterised by the presence of endophytic

mycorrhiza.

  1. Blue green algae are found in the cavities of Marsilea leaves.
  2. Gymnosperms have naked seeds.
  3. Gnetum gnemon is a woody climber.
  4. Williamsonia is a fossil pteridophyte.

 

III. Complete the following:                                                                                  (5 x 1 = 5 marks)

 

  1. The formation of a sporophyte without the act of fertilization from vegetative cells of the

gametophyte is known as ______________.

  1. False indusium is seen in_____________.
  2. Inverted omega shaped arrangement of vascular bundles are seen in Cycas ___________.
  3. Bract scale and ovuliferous scale are seen in the megasporophyll of ___________.
  4. Father of Indian Paleobotany is ___________.
  5. Answer the following each within 50 words.                         (5 x 1 = 5 marks)     

 

  1. Write notes on synangium?
  2. What is protocorm?
  3. Differentiate manoxylic from pycnoxylic wood.
  4. Write about Bars of Sanio.
  5. Mention the two species of Rhynia.

 

                                                    PART – B                                      (5 x 7 = 35 marks)

 

Answer the following, each answer within 500 words.

Draw diagrams wherever necessary.

  1. a) Discuss the general characters of Pteridophytes.

(OR)

  1. b) What is heterospory? How does it lead to the formation of seed habit?

 

  1. a) Describe the morphology of the sporophyte of Lycopodium.

(OR)

  1. b) Explain the external structure of Marsilea

 

  1. a) Enumerate the diagnostic features of Coniferales.

(OR)

  1. b) Bring out the economic importance of gymnosperms.

 

  1. a) Write notes on the female strobilus in Gnetum.

(OR)

  1. b) Give an illustrated account of the internal structure of Pinus

 

  1. a)Describe “ Calamites “.

(OR)

  1. b) Comment on Geological time scale.

 

 

       PART – C                                             (3 x 15 = 45 marks)

 

Answer any THREE questions, each within 1200 words. Draw diagrams wherever necessary.

  1. Describe the various types of steles found in Pteridophytes.
  2. Explain the life cycle of Equisetum.
  3. List out the affinities of Gymnosperms with pteridophytes and angiosperms.
  4. With suitable diagram explain the T.S of coralloid root and leaflet of Cycas.
  5. Write an essay on fossils and fossilization.

 

 

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Plant DIVersity – I (Algology, Mycology, Bryology) Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIRST SEMESTER – APRIL 2011

PB 1505/PB 1502 – PLANT DIVERSITY – I (ALGOLOGY, MYCOLOGY, BRYOLOGY)

 

 

 

Date : 19-04-2011              Dept. No.                                           Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A (20 marks)

Answer ALL questions

  1. Choose the correct answer:   ( 5 x 1 = 5 marks)

 

  1. Match [A] Cyanophyceae[B] Chlorophyceae [C] Phaeophyceae [D] Bacillariophyceae

[i] Chloroplast       [ii] Frustule           [iii] Laminarin          [iv] Prokaryotes

(a) A –iv,  B-i,  C-iii, D- ii                        (b) A- i,  B- ii,  C –iii,   D- iv

(c) A- iv,  B-iii,  C– ii, D –i                       (d) A – iii,  B – ii,  C – iv,  D – i

  1. Statement A – Ectocarpus has heterotrichous condition.

Statement B – The gametophyte of Ectocarpus  produces haploid zoospores.

(a) Statement A is incorrect and B is correct      (b) Statement A is correct and B is incorrect

(c)  Both statements are correct                          (d) Both statements are incorrect.

  1. Pick the odd one out based on mode of nutrition

(a)  Rhizopus                    (b) Neurospora               (c) Saccharomyces                (d) Puccinia

  1. Statement A –  Polyporus is commonly called the bracket fungus

Statement  B – The pore surface is lined by the hymenium

(a) Statement A is incorrect and B is correct     (b) Statement A is correct and B is incorrect

(c) Both statements are correct                         (d) Both statements are incorrect.

  1.   Peristome  aids in spore dispersal in

(a) Marchantia                 (b) Anthoceros              (c) Albugo                   (d) Funaria

  1. State whether the following statements are TRUE or FALSE : ( 5 x 1 = 5 marks)
  2. Red algae are predominantly marine in distribution.
  3. Anabaena is a heterocystous cyanobacterium.
  4. Ascogenous hypha is monokaryotic.
  5. Albugo causes white rust disease in wheat.
  6. The sporophyte of Anthoceros is independent.

III.  Complete the following:                                                                                      ( 5 x 1  5 marks)

  1. Oogamous sexual reproduction is characterized by non motile —————-and motile ————–.
  2. Volvox reproduces asexually by specialized cells called—————-.
  3. Dolipore septum is seen in the hypha of ————– group of fungi.
  4. Red rot of sugarcane is caused by ———————- ————–.
  5. Sex organs of Marchantia are borne on —————— and ——————.

 

  1. Answer the following, each within 50 words only :                                          ( 5 x 1 = 5 marks)
  2. List any four characteristic features of Rhodophyceae.
  3. Comment on the structure of the diatom cell.
  4. How are fungi equipped for heterotrophic nutrition?
  5. Mention the components of lichen thallus and the function of each partner.

20.Why are bryophytes called the amphibians of plant kingdom?

 

PART- B

 

Answer the following, each answer within 500 words; Draw diagrams wherever necessary.

   (5 x 7 = 35 marks)

  1. (a) How do algae reproduce by asexual means ?

OR

(b) Draw and describe the prokaryotic cell structure in blue green algae.

 

  1. (a) Describe sexual reproduction in Vaucheria.

OR

(b) Describe the thallus of Polysiphonia.

 

  1. (a) Bring out different groups of fungi based on mode of nutrition.

OR

(b) Give an account of the asexual reproduction in Fungi.

 

  1. (a) How does Neurospora reproduce asexually ?

OR

(b) Explain the structure of Polyporus basidiocarp.

 

  1. (a) Draw labelled diagram only of the internal structure of Funaria capsule. Add a note on spore

Dispersal.

OR

(b) Describe the internal structure of Anthoceros gametophyte.

 

PART – C

 

Answer any THREE of the following, each within 1200 words.    Draw diagrams wherever necessary.

    (3 x 15 = 45 marks)

 

  1. What are the various life cycle patterns encountered in algae? With suitable examples, give the

scheme and explain any one.

 

  1. Give a detailed account of the economic importance of algae, including information from all the

groups you have studied.

 

  1. Describe the structure of fruiting bodies formed in fungi.

 

  1. Describe the life cycle of Puccinia graminis.

 

  1. Give a comparative account of the gametophyte of Marchantia and Funaria.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Plant Diseases And Management Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

SIXTH SEMESTER – APRIL 2011

PB 6608/PB 6604 – PLANT DISEASES AND MANAGEMENT

 

 

 

Date : 05-04-2011              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A  (20 marks)

 

ANSWER ALL THE QUESTIONS

 

I.CHOOSE THE CORRECT ANSWER :                                                (5 x 1 = 5 marks)

 

  1. Which one of the following is not produced by the pathogen ?

[a]  Toxins         [b] Enzymes        [c] Phytoalexins         [d] Growth regulators

 

  1. Which one of the symptoms is  produced by viral pathogens?

[a] Chlorosis           [b] Canker        [c] Rot              [d] Wilt

 

  1. The causal organism of the club root of cabbage is:

[a] Pernospora parasitica                 [b] Phytophthora infestans

[c] Plasmodiophora brassicae          [d] Fusarium oxysporum

 

  1. Tobacco Mosaic Virus can be controlled by

[a] spraying chemicals                  [b] controlling insect vectors

[c] growing resistant varieties       [d] clipping diseased plant parts.

 

  1. Which one of the following is an organic mercurial fungicide ?

[a] Agrosan        [b] Bavistin      [c] Captan        [d] Maneb

 

 

  1. STATE WHETHER THE FOLLOWING STATEMENTS ARE TRUE OR FALSE :

(5 x 1 = 5 marks)

  1. Fungal pathogens penetrate the host by producing appressorium.
  2. Horizontal resistance is usually polygenic in inheritance.
  3. Damping off is a symptom seen in branch tips.
  4. Root knot of potato is caused by nematodes.
  5. The ‘safener’ in Bordeaux mixture is copper.

 

III. COMPLETE THE FOLLOWING :                                                                        (5 x 1 = 5 marks)

 

  1. Removing the source of inoculum and  preventing the spread of infection is achieved

through —————–.

  1. Secondary metabolites of host plant produced in response to pathogen attack are called ————.
  2. Red rot of sugarcane is caused by —————— ——————-.
  3. Little leaf of brinjal is caused by ———————.
  4. Plant quarantine  measures help in preventing —————–.

 

  1. ANSWER THE FOLLOWING, EACH WITHIN 50 WORDS:        (5 x 1 = 5 marks)

 

  1. Define inoculum potential.
  2. What is hypersensitive reaction?
  3. What is an alternate host?
  4. How are insect galls produced?
  5. What is biological control ?

PART – B

 

ANSWER ALL QUESTIONS, EACH WITHIN 500 WORDS, DRAW DIAGRAMS WHEREVER  NECESSARY :                                                                                                           ( 5 x 7 = 35 marks)

 

  1. a)  Explain the molecular basis of infection.

(OR)

  1. b) What are the various toxins produced by fungal pathogens ?

Point out their role in infection.

 

  1. a) What are the induced defence mechanisms seen in host plants ?

(OR)

  1. b) Explain the role of environmental factors in the onset of disease.

 

  1. a) Give the causal organism, symptoms and control measures for Tikka disease of

groundnut.

(OR)

  1. b) Describe the Downy mildew disease of grapes.

 

  1. a) Give an account of a disease caused by mycoplasma.

(OR)

  1. b) Give an account of angiospermic plant parasite.

 

  1. a) Give a concise account of  chemicals used for plant protection.

(OR)

  1. b) Write notes on bacterial biopesticide.

 

PART C

 

ANSWER ANY THREE QUESTIONS IN NOT MORE THAN 1200 W0RDS EACH. DRAW DIAGRAMS WHEREVER NECESSARY.                                                       (3 x 15 = 45 marks)

 

  1. Elaborate on the concepts in the process of infection.
  2. Explain the innate defence mechanisms  encountered in host plants.
  3. Discuss the causal organism, symptom and control measures of Rust of wheat.
  4. Give a brief account of the diseases of paddy crop –fungal, bacterial and viral.
  5. Highlight the role of engineered resistance in plant disease control.

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Plant Biotechnology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – APRIL 2011

PB 5518/PB 5512/PB 5504 – PLANT BIOTECHNOLOGY

 

 

 

Date : 20-04-2011              Dept. No.                                                  Max. : 100 Marks

Time : 1:00 – 4:00

 

PART-A (20 Marks)

Answer ALL  questions

 

  1. Choose the correct answer                                                                                        (5X1=5 marks)

 

  1. ______ is the ability of a single cell to divide and produce all the differentiated cells in an organism, including extraembryonic tissues.
  2. Micropropagation   Totipotency            c. Pluripotency.         d. clonal propagation

 

  1. Cultures are generally initiated from sterile pieces of a whole plant termed __________
  2. Implant   explant                    c. protoplast                d. None

 

  1. The molecular size of Ti plasmid is ______
  2. 20 Kb                   100 Kb                    c. 200 Kb                     d. 2 Kb

 

  1. The principal component in chain termination method of DNA sequencing is _______
  2. Deoxynucleotides            Ribonucleotides        c. Dideoxynucleotides          d. All

 

  1. The nptII antibiotic marker used in plants impart resistance to ________
  2. Kanamycin                       Ampicillin                c. Chloramphenicol                d. Penicillin

 

  1. State whether the following statements are TRUE or FALSE (5X1=5 marks)

 

  1. GA3 is a form of Gibberellic acid.
  2. Callus culture is often performed in the dark.
  3. Opines are condensation products of fatty acids and sugars.
  4. Reverse transcriptase is RNA dependant DNA polymerase.
  5. RAPD is Restriction amplified Polymorphic DNA.

 

  • Complete the following (5X1=5 marks)

 

  1. _______ is defined as the mass of undifferentiated tissue.
  2. _________is a technique by which protoplasts of plant cells belonging to different species or genera are fused.
  3. During nodule formation, Rhizobia in the host cell cytoplasm,   get transformed into swollen, irregular-shaped, branched structures called  ______
  4. The transfer of DNA from gel to membrane is called _______
  5. The genome of _______ plant was the first candidate for complete genome sequencing.

 

  1. Define the following (5X1=5 marks)

          

  1. Define Acclimatization.
  2. What are somaclonal variants?
  3. RUBISCO-Explain.
  4. Define Gene library.
  5. Abiotic stress.

PART-B

 

Answer the following  within 500 words. Draw  diagrams wherever necessary                  (5X7=35 marks)

 

 

  1. a) Discuss the role of hormones in in vitro culture.

 

(or)

 

  1. b) Write short notes on the different types of media used in plant tissue culture.

 

  1. a) Briefly explain the steps involved in the isolation of protoplasts.

 

(or)

 

  1. b) Explain in short about the anther culture.

 

  1. a) Explain the organization and function of chloroplast DNA.

 

(or)

 

  1. b) Write notes on : i) CMS              ii) Rhizobial genes.                                          (4 + 3 marks)

 

  1. a) Write notes on:
  2. Restriction enzymes ii. Molecular probes.                           (4+3 marks)

 

(or)

 

  1. b) Explain briefly about the gene delivery systems.

 

  1. a) Elaborate on the production of insect resistant transgenic plants.

 

(or)

 

  1. b) Production of herbicide resistant transgenic plants- Explain.

 

PART-C

 

Answer any THREE of the following, each with 1200 words.  Draw diagrams wherever necessary

(3X15=45 marks)

  1. Elaborate on the sterilization methods employed in plant tissue culture.
  2. Describe in detail about somatic embryogenesis & synthetic seeds. Also add a note on their

applications.

  1. Explain the molecular mechanism involved in the transformation of plants by Agrobacterium

      tumefaciens.

  1. Explain in detail about the principle and applications of Polymerase chain reaction.
  2. Give a detailed account on the molecular markers and DNA fingerprinting.

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Microbiology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FOURTH SEMESTER – APRIL 2011

PB 4508/PB 4504/PB 3500 – MICROBIOLOGY

 

 

 

Date : 07-04-2011              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART-A (20 Marks)

Answer ALL  questions

 

  1. Choose the correct answer                                                             (5X1=5 marks)

 

  1. ______ method is used to stain Mycobacterium
  2. Gram staining Acid-Fast staining    c. Simple staining   d.  Giemsa staining

 

  1. Bacterial cells that exhibit a variety of shapes are called ______.
  2. Pleomorphic Palisade   c. Trichomes   d. None of the above

 

  1. When the viral genome can become integrated in to the bacterial genome, they are known as ______
  2. Episome b. Prophage            c.Plasmids                    d.  None

 

  1. The infection of a bacterium by the phage nucleic acid is known as _______
  2. Transformation b. Conjugation           c. Transduction      d. recombination

 

  1. Vinegar is otherwise called as _______
  2. Citric acid b. Acetic acid  c. Lactic acid  d. Sulphuric acid

 

  1. State whether the following statements are TRUE or FALSE         (5X1=5 marks)

 

  1. Pure culture is otherwise known as axenic culture.
  2. Facultative anaerobic bacteria are those which can grow without oxygen but

can utilize oxygen if it is present.

  1. Generalized transduction provides a means for mapping bacterial genes.
  2. Viruses infecting fungi are called cyanophages.
  3. Rhizopus nigricans spoils bread

 

  • Complete the following          (5X1=5 marks)

 

  1. ______ introduced principle of aseptic surgery.
  2. Culture medium that allows one to distinguish between or among different

microorganisms based on a difference in colony appearance is _______.

  1. _______ is an agent that can carry a foreign DNA fragment into a host cell.

 

  1. The zone of lysis produced by phages upon incubation on a lawn culture

of bacteria is known as _______.

  1. Penicillin was discovered by ________.

 

  1. Define the following                                                             (5X1=5 marks)

 

  1. Monera
  2. Lyophilization
  3. Log Phase
  4. Virion
  5. BOD

PART-B

 

Answer the following each within 500 words.  Draw  diagrams wherever necessary

(5X7=35 marks)

 

  1. a) List the contributions of:
  2. Robert Koch (3.5 marks)
  3. Louis Pasteur (3.5 marks)

(or)

 

  1. b) Write the principle and procedure of Gram staining.

 

  1. a) Describe the ultra structure of Bacterial cell.

 

(or)

 

  1. b) Explain briefly any two methods of isolating pure culture.

 

  1. a) Give an account on Enzymes: its nomenclature and characteristics.

 

(or)

  1. b) Write notes on TCA cycle.

 

  1. a) Briefly explain about the cultivation of viruses.

 

(or)

 

  1. Give a brief account on classification of viruses.

 

  1. a) Elaborate on the various practices used for food preservation.

 

(or)

 

  1. b) Industrial production of Alcohol- Explain.

 

 

PART-C

 

Answer any THREE of the following, each with 1200 words

Draw  diagrams wherever necessary                                                                   (3X15=45 marks)

 

  1. Discuss in detail about the major characteristics of microorganisms.
  2. Describe in detail about the techniques used in the quantitative measurement

of bacterial growth.

  1. Write in detail:
  2. Conjugation (7.5 marks)
  3. Transformation (7.5 marks)
  4. Elaborate in detail about the structure and lytic cycle of Bacteriophages.
  5. Give a detailed account on sewage treatment.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Medical Microbiology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – APRIL 2011

PB 5405 – MEDICAL MICROBIOLOGY

 

 

Date : 12-04-2011              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

                                                            

PART – A                                                    ( 10 X 2 = 20 marks)

 

Answer all the questions, each answer not exceeding 50 words

  1. Disinfectant
  2. Fumigation
  3. Sulphonamide
  4. Antibiotic sensitivity test
  5. Resident flora
  6. Skin as external defensemechanism
  7. Histoplasmosis
  8. Amoebiasis
  9. Symptoms of Tetanus
  10. Control of Rabies

PART – B                                                       ( 5 X 8 = 40 marks)

 

Answer the following, each answer within 500 words only

 

  1. A) Write about the contributions of any eight scientists to the field of medical microbiology.

OR

  1. B) Discuss the importance of phenols and heavy metals in the control of microbes.
  2. A)  What is chemotherapy?  Write down the  characterestics of a chemotherapeutic agent.

OR

  1. B) What are antibiotics? Mention the source, mode of action of any four antibiotics.
  2. A)   Distinguish between exotoxins and endotoxins.

OR

  1. B) Write about the role of intestinal flora as normal microbial flora.
  2. A)   Explain the causal organism, symptoms, treatment and control of tuberculosis.

OR

  1. B) Write about the causal organism, symptoms and treatment of cholera.
  2. A)   Discuss the mode of transmission,  symptoms and control of syphilis.

OR

  1. B) Explain the disease cycle of

 

PART – C                                            ( 2 X 20 = 40 marks)

 

Answer any two of the following, each within 1500 words only

  1. Write an essay on any four physical methods of control of microbes.
  2. Give an outline of immunity. Write about any two antigen-antibody reactions.
  3. Discuss the causal organism, symptoms, treatment and control of chicken pox.
  4. Explain the mode of transmission, symptoms and prevention of AIDS.

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Herbal And Ethanobotany Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – APRIL 2011

PB 5517/PB 5511/PB 5503 – HERBAL AND ETHANOBOTANY

 

 

 

Date : 19-04-2011              Dept. No.                                          Max. : 100 Marks

Time : 1:00 – 4:00

 

PART- A (20 marks)

Answer ALL the questions

  1. I. Choose the correct answer (5X1=5)

 

  1. Vascin is a
  2. Hypertensive drug        Bronchodilator      c. Carcinogenic        d. Carminative
  3. Andrographis paniculata contains
  4. Troponin    Vincristine          c. Taxol          d. Andrographolide
  5. An ingredient of Triphalachurna is
  6. Trichopus zeylanicus Triticum vulgare  c. Emblica officinalis  d. Zingiber officinale
  7. An important ingredient of herbal oil is
  8. Wrightia tinctoria Trichodesma zeylanicum  c. Eclipta alba  d. Eryngium foetidum
  9. Paliyars inhabit
  10. Palani Hill          Thiruvallur District    c. Javadhi Hills      d. Kanyakumari District

 

  1. State whether the following statements are true or false (5×1=5)

 

  1. Coriandrum sativum is a carminative.
  2. Isabol is a source of micronutrient.
  3. Poultices is used to reduce swellings.
  4. Irulas live in the Nilgiris.
  5. Traditional Knowledge is always codified.

III. Complete the following                                                                                                       (5×1=5)

 

  1. Elixirs has _____________________ Property.
  2. Infusion of many drugs is called
  3. Scopolamine is present in
  4. ____________________ states has concentration of tribal population.
  5. Charaka Samhitha is an important reference in _________________ system of medicine.

 

  1. Answer with in 50 words                                              (5×1=5)

 

  1. Write notes on alkaloids.
  2. What are glycerites?
  3. Mention any two points about export potential of herbs.
  4. Mention two important source of literature for ethnobotany.
  5. Give two examples for resinous drugs.

PART – B

Answer the following each within 500 words.  Draw diagrams wherever necessary.                                                                                                                                                                     (5×7=35)            

                                                                                   

  1. a) What are the parameters studied in microscopic evaluation of drugs?

(OR)

  1. b) Explain active and inactive constituents of drugs.

 

  1. a) Discuss the medicinal properties of Ocimum sanctum and Zingiber officinale.

(OR)

  1.          b) Discuss the medicinal properties of Datura metal and Vinca rosea.

 

  1. a) Wild shrubs should be collected on a sustainable basis. Justify.

(OR)

  1. b) Give the composition of any two herbal oils and their uses.

 

  1. a) Explain the importance of herbaria for ethnobotanical research.

(OR)

  1. b) Provide a brief ethnographic note on Irulas.

 

  1. a) Write on the drug source from cultivated plants.

(OR)

  1. b) Herbs have a good export potential. Discuss.

 

PART –C

 

Answer any THREE Questions. Each answer with in 1200 words, draw diagrams.  

Wherever necessary.                                                                                                  (3×15=45) 

   

  1. Write in detail about the preparation of Drugs for commercial market.
  2. Discuss about the organoleptic study on Phyllanthus amarus, Adhatoda vasica and Ricinus communis.
  3. Explain the various methods used in the extraction of Volatile oils and Resins.
  4. Briefly discuss the methods adopted in collecting ethnobotanical information from field and literature.
  5. Bring out the knowledge of tribes towards disease diagnosis, treatment, medicinal plants and their cultivation.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Genetics, Plant Breeding And Evolution Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – APRIL 2011

PB 5516/PB 5510/PB 5506 – GENETICS, PLANT BREEDING AND EVOLUTION

 

 

 

Date : 18-04-2011              Dept. No.                                                    Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A  (20 Marks)

 

Answer ALL questions                                                                                            

 

  1. Choose the correct answer (5×1 = 5)

 

  1. 12:3:1 ratio is due to
  2. lethal gene                b.  epistatic gene       c.  hypostatic gene        d.  supplementary gene
  3. The generation of a polypeptide chain on the basis of the information contained in

DNA template is called

  1. transcription             b.  translation                        c.  transversion                          d.  transduction
  2. A person with a karyotype XXY has
  3. Turner’s syndrome               b.  Klinefelter’s syndrome.     c.   Edward’s syndrome                      d.  Cat-cry syndrome
  4. The Central Rice Research Institute is at
  5. Cochin                      b.  Chennai                  c.  Cuttack                               d.  Coimbatore
  6. “Origin of Species” was written by
  7. Mendel                    b.  Pasteur                  c.  Linnaeus                  d.  Darwin

 

  1. State whether the following statements are true or false (5×1 = 5)

 

  1. Reciprocal crosses yield different results in cytoplasmic inheritance.
  2. Cytosine pairs with Thymine in DNA.
  3. The term ‘mutation’ was coined by Hugo de Vries.
  4. Water logging enhances the growth of cereal crops.
  5. Evolution is influenced by natural selection.

 

III. Complete the following                                                                                                  (5×1 = 5)

 

  1. Multiple alleles influence the same  _________________________
  2. The first molecular biologist who visualised the replicating chromosome of E. coli

was ________________________

  1. The chemical colchicine has the property to induce  ___________________
  2. The Indian Institute of Sugarcane Research is at  ________
  3. The Neo-Darwinism Theory was first proposed by______________________

 

  1. Answer the following, each within 50 words (5×1 = 5)

 

  1. Define Monohybrid Cross
  2. Comment on Recon
  3. What is Frame Shift Mutation?
  4. Writes note on Heterosis
  5. What is speciation?

 

 

 

 

PART – B

 

Answer all five questions, each within 500 words. 

Draw diagrams wherever necessary.                                                                      (5×7 = 35 marks)

 

  1. a. Explain the inheritance of complementary genes

(OR)

  1. Why has Mendel been called “The Father of Genetics”?

 

  1. a. Describe genetic recombination using the life cycle of Neurospora crassa.

(OR)

  1. Write a short note on Transposable elements in plants

 

  1. a. Describe any one human genetic disorder.

(OR)

  1. Mention the various physical and chemical mutagens.

 

  1. a. Distinguish between clonal and pureline methods of selection.

(OR)

  1. Comment on the principles, objectives and importance of plant breeding.

 

  1. a. What is meant by Synthetic Theory?

(OR)

  1. Highlight the important features of Mutation Theory

.

PART – C

.

Answer any THREE questions, each answer within 1200 words. 

Draw diagrams wherever necessary                                                                       (3×5 = 45 marks)

 

  1. With the help of suitable examples, discuss the inheritance of multiple genes.
  2. Explain the semi-conservative models of DNA replication.
  3. Highlight the genetic significance of chromosomal aberrations.
  4. Give a detailed account of hybridization techniques in plants.
  5. Compare and contrast the Darwinism and Lamarckism Theories of Evolution.

 

 

 

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