B.Sc Corporate Plant Biology and Biotechnology Question Paper 2011

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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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Fermentation Technology 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 6609/PB 6606 – FERMENTATION TECHNOLOGY

 

 

 

Date : 09-04-2011              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 PART – A( 20 marks)

  ANSWER ALL THE QUESTIONS                                                                                                 

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

  1. Amylases are produced by
  2. a) Aspergillus niger b) Bacillus licheniformis     c) Rhizopus       d) Phanerochaete

2.Air is supplied to a fermenter by

  1. a) Sparger b) Baffles               c) Impeller                      d) Shaft
  2. The preservation of cultures using freeze drying is called as
  3. a) Sterilisation b) Ionisation          c) Lyophilisation          d) Tyndallisation
  4. Antifoam agents used in industrial fermentations are
  5. a) Silicones b) Esters           c) Alcohols                                 d) All of these
  6. Cell disruption technique involves
  7. a) Centrifugation b) Precipitation           c) Filtration                    d) Liquid shear

 

  1. State whether the following statements are True or False           (5×1=5)
  2. Secondary metabolites are produced during idiophase.
  3. Batch culture is a closed culture containing limited amount of nutrients and inoculum.
  4. Impellers prevent swirling and vortexing of the fluid.
  5. Precipitationprocess is normally adopted for proteins.
  6. Tachometers are sensors which penetrate into the interior of the fermenter.

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

  1. An example of a product produced by a genetically engineered organism is __________.
  2. Air bubbles are distributed uniformly in the fermenter by___________ .
  3. The instrument used for measuring gas flow is ___________.
  4. The cheapest source of carbon available from plant source is_____________.
  5. The surfactant used in foam separation is________.

 

  1. Answer the following each in 50 words           (5×1=5)
  2. What are microbial metabolites?
  3. What are the components in a synthetic media?
  4. How will you adjust pH in a media?
  5. How will you control foam?

20.Comment on filtration in downstream processing.

 

                                                                 PART-B                                                             

Answer any FIVE of the following questions in about 350 words.                 (5×7=35marks)     

 Draw necessary Diagrams.

  1. a) Trace the development of industrial Biotechnology.

(OR)

  1. b) Explain microbial
  2. a) Write notes on the sterilization of media and equipment.

(OR)

  1. b) Discuss microbial growth kinetics in a batch culture.
  2. a) Describe the design of Airlift fermenter.

(OR)

  1. b) Describe the aeration and agitation devices attached to a fermenter.
  2. a) Discuss the methods of measuring dissolved oxygen.

(OR)

  1. b) Write notes on online control of fermenters.
  2. a) Comment on effluent treatment of industrial waste.

(OR)

  1. b) Explain the technique of Centrifugation in downstream processing.

 

PART – C

Answer any THREE of the following not exceeding 1200 words.                  (3×15=45 marks)

Draw diagrams wherever necessary.

 

  1. Explain the production and applications of microbial enzymes.
  2. Explain in detail the operation of a continuous culture fermenter and how does it differ from

a Batch fermenter.

  1. Describe the methods of preservation of industrially important microorganisms.
  2. Discuss the role of Biosensors in the fermentation industry.
  3. Describe the important processes in downstream processing.

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2011 Environmental Biotechnology 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 6610/PB 6605 – ENVIRONMENTAL BIOTECHNOLOGY

 

 

 

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

Time : 9:00 – 12:00

 

PART-A (20 Marks)

Answer ALL  questions

 

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

 

  1. Biogas (Methane) production involves _______ microorganisms.
  2. Acetogenic b. Methanogenic c. Hydrolytic & fermentative  d. All the above

 

  1. _______ is otherwise known as superbug.
  2. Pseudomonas putida b. Pseudomonas aeruginosa c. Proteus putida  d. Proteus aeruginosa

 

  1. _____ cells are used to remove PCP from contaminated water.
  2. Flavobacterium b. Arthrobacter c. Bacillus sp   d. Pseudomonas putida

 

  1. _______is the in situ treatment that involves supplying air and nutrients through

wells to contaminated soil to stimulate the indigenous bacteria

  1. Bioventing  b. Biosparging   c. Landfarming   d. Bioleaching

 

5._____ is an aggregate of microorganisms in which cells adhere to a surface.

  1. Floc b. Biofilm   c.  Biocontaminants  d. None

 

  1. State whether the following statements are TRUE or FALSE (5X1=5 marks)
  2. The sewage of high organic material has high BOD
  3. Activated sludge process is an anaerobic process.
  4. Co-metabolism is used as an approach tobiological degradation of hazardous solvents.
  5. Biopiles are a hybrid of landfarming and composting
  6. Thiobacillus predominate  in the deposits of sulphide ores

 

III. Complete the following (5X1=5 marks)

  1. _____ is the operation of composting process involving earthworms.
  2. _____ is the predominant microorganism present in the trickling filters.
  3. ______ is an emerging technology that uses plants to remove contaminants from soil and water
  4. _____ is the process of addition of microorganisms indigenous or exogenous to the contaminated sites.
  5. ________ is the process by which living organisms convert ions in solution into solid minerals.

 

  1. Answer the Following ,each within 50 words (5X1=5 marks)
  2. Define Eutrophication.
  3. Define biosorption.
  4. Define xenobiotics
  5. Define bioremediation
  6. Define Radionuclide

 

PART-B (5X7=35 marks)

Answer the following  within 500 words.

Draw  diagrams wherever necessary

 

21.a. Describe the process of composting.

Or

  1. Write the causes and effects of soil pollution.

 

22.a. Describe briefly about the bioreactors used in effluent treatment.

Or

  1. Give an account on the removal of oil spills using microbes.

 

23.a.  Describe the phenol biodegradation  pathway.

Or

  1. Comment on the methods to purify polluted air.

 

  1. Describe the types of reactors used in bioremediation.

Or

  1. Write a note on the microbial populations involved in bioremediation process.

 

  1. What are the treatment technologies for radionuclides?

Or

  1. Discuss biofilms and biocorrosion.

 

 

 

 

 

PART-C (3X15=45 marks)

Answer any THREE of the following, each with 1200 words

Draw  diagrams wherever necessary

 

  1. What are Non conventional energy resources and their types? Describe in detail about energy derived from wastes.
  2. Outline the processes involved in the secondary sewage treatment.
  3. Explain in detail about the degradation of PCPs and PCBs.
  4. Explain in detail about the bioremediation strategies.
  5. Give a detailed account on microbial leaching of any two metals.

 

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