Gymno.

Loyola College B.Sc. Plant Biology and Biotechnology April 2006 Pterido., Gymno., & Paleobotany Question Paper PDF Download

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             LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & BIOTECHNOLOGY

IB 3

SECOND SEMESTER – APRIL 2006

                                         PB 2502 – PTERIDO., GYMNO., & PALEOBOTANY

(Also equivalent to PB 2500)

 

 

Date & Time : 24-04-2006/1.00-4.00 P.M.   Dept. No.                                                       Max. : 100 Marks

 

 

Part A

Answer all the questions                                                                     (20 marks)

  1. Choose the correct answer (5 x 1 = 5 )
  2. Which one of the following fern is commonly called as club mosses
  3. a) Psilotum b) Lycopodium            c) Equisetum               d) Marsilea
  4. Name the scientist who proposed telome theory.
  5. a) Rimer b) Zimmermann           c) Andrew                   d) Bohlin.
  6. Which of the following is used as a source of anticancer drug?
  7. a) Zamia b) Taxus                      c) Cycas                      d) Tsuga
  8. The ovule of Gnetum has _____ integuments.
  9. a) 1 b) 2                              c) 3                              d) 4
  10. Life originated in this planet about ______ billion years
  11. a) 3.5 b) 4.5                           c) 1.5                           d) 5.3

 

  1. State whether the following statements are True or False (5 x 1 = 5 )
  2. The gametophyte of Selaginella is exosporic.
  3. The leaves bearing sporangia are called elators.
  4. Ginkgo biloba is a living fossil.
  5. Welwitschia belongs to Coniferopsida.
  6. Compression fossils are commonly seen in coal mines.

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

  1. Adiantum belongs to the class __________.
  2. In ferns, __________ phase is the dominant part of the life cycle.
  3. When centripetal and centrifugal xylem are present the condition is referred to as _______________
  4. Eccentric secondary growth is seen in _____________.
  5. Progymnosperms were discovered by ________________.

 

 

  1. Answer the following in about 50 words (5 x 1 = 5)
  2. What is amphiphloic siphonostele?
  3. Distinguish between heterospory and homospory.
  4. Distinguish between haplochelic and syndetochelic stomata.
  5. Describe the embryo of
  6. What is Petrifaction?

Part B

Answer any five of the following, each in about 350 words. Draw necessary diagrams.    (5 x 8 = 40)

  1. With an example, explain the life cycle of a heterosporous Pteridophyte.
  2. Write notes on origin of Pteridophytes.
  3. Describe the life history of Psilotum.
  4. List out the characteristic features of Cordaitales.
  5. Enumerate the salient features of Cycadeoideales.
  6. Write notes on the anatomy of stem in Gnetum.
  7. Mention the conditions essential for fossilization. Add a note on changes that occur during fossilization.
  8. Describe the important features of Calamites. Compare it with

 

Part C

Answer the following questions in about 1500 words. Draw necessary diagrams

(2 x 20 = 40)

  1. a. Write notes on i) Heterospory precedes seed habit. Discuss.

ii). Briefly explain the types of stele.

(or)

  1. Give a comparative account of life cycle of Equisetum and Marsilea.
  2. Explain in detail about the structure of male and female cone in Pinus.

(or)

  1. Write in detail about the anatomy of stem and leaf in Cycas.

 

 

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Loyola College B.Sc. Plant Biology and Biotechnology April 2007 Plant DIVersity-II (Pterido, Gymno, Paleo.) Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc.

IB 43

DEGREE EXAMINATION –PLANT BIOLOGY & PLANT BIO-TECH.

SECOND SEMESTER – APRIL 2007

PB 2502 – PLANT DIVERSITY-II (PTERIDO, GYMNO, PALEO.)

 

 

Date & Time: 20/04/2007 / 1:00 – 4:00            Dept. No.                                                     Max. : 100 Marks

 

 

Part A                                           (20 marks)

Answer All questions

 

I Choose the Correct Answer                                                                                     ( 5 x 1 = 5 marks)

 

  1. Which of the following stele is found in Marsilea rhizome.
  2. Protostele b. Haplostele
  3. Plectostele d. Amphiphloic siphonostele
  4. Name the economically important fern which can be used in paddy cultivation.
  5. Selaginella b. Azolla          c. Rhynia                     d. Marsilea
  6. Sago is obtained from
  7. Cycas circinalis                               b. Zamia
  8. Dioon                                             d. Macrozamia
  9. Ovuliferous scale of Pinus is a part of
  10. megasporophyll b. microsporophyll
  11. ovule d. dwarf shoot
  12. Microtome technique is used to study ………. fossils.
  13. petrified b. compressed                         c. cast              d. mold

 

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

 

  1. Homosporous fern Selaginella exhibit seed habit.
  2. 07. Lycopodium is commonly known as horse tail.
  3. Secondary xylem of Cycas consists of tracheids and vessels.
  4. Double fertilization occurs is Pinus.
  5. The name of the cone of Lepidodendron is Lepidostrobus.

 

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

 

  1. In Pteridophytes, the branching of the stem is ……… type.
  2. The ………. of Psilotum plant is associated with endophytic mycorrhiza.
  3. Mucilage canals are present in the stem of ………….

14.The ………….. produces cork cells towards outer side and secondary cortex towards

inner side.

  1. In ……….. process, the tissues are transferred into hard stone like structure.

 

  1. Answer all, each in about 50 words                ( 5 x 1 = 5 marks)

 

  1. What is plectostele? Give one example.
  2. Distinguish between exosporic and endosporic gametophyte.
  3. Define polyembryony.
  4. Write short notes on manoxylic wood.
  5. Mention any two Indian contributions towards Gymnosperms.

 

 

 

 

PART B                                          ( 5 x 8 = 40 marks)

 

Answer any five, each within 350 words only. Draw diagrams and flowcharts wherever necessary.

  1. List out the important features of Pterophyta and Psilophyta.
  2. Describe the anatomical features of Equisetum rhizome.
  3. Draw the life cycle of homosporous and heterosporous pteridophytes.
  4. Enlist the salient features of Coniferales.
  5. With the help of labeled diagrams only differentiate the anatomy of Cycas leaflet with

Gnetum leaf.

  1. Write brief account on economic importance of Gymnosperms.
  2. Give an account of the morphology, anatomy and sporangium of Rhynia.
  3. Briefly explain the different techniques used to study the fossils.

 

PART C                                       ( 2 x 20 = 40 marks)

 

Answer the following, each within 1500 words only. Draw diagrams and flowcharts wherever necessary.

 

29a. Give a detailed account of the structure and development of sporangium in

homosporous and heterosporous fern.

 

OR

 

b.Write down the external features of sporophytic plant body of Lycopodium,      

        Equisetum, Marsilea and Azolla.

 

 

30a. Give a general account of the reproductive organs of Cycas , Pinus and Gnetum.

OR

 

b i). Enumerate the salient features of Bennettitales.

ii). Give an account of different types fossils.

 

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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 2012 Plant DIVersity – II(Pteri.,Gymno.,& Paleobot.) Question Paper PDF Download

by

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

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

SECOND SEMESTER – APRIL 2012

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

 

 

 

Date : 16-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

 

Answer the following , each in about 50 words:                                           (10 x 2 = 20 marks)

 

  1. Distinguish between Apospory and Apogamy.
  2. Define Amphiphloic siphonostele.
  3. Explain Heterospory with example.
  4. Give any two economic importance of Pteridophytes.
  5. Mention any two characters of  Gnetales.
  6. List any two important features of Bennettitales.
  7. What is Transfusion tissue?
  8.  What is dwarf shoot?
  9.  Define fossilization.
  10.  What is Geological time scale?

 

PART – B

 

Answer the following, each answer not exceeding 500 words:           (5 x 7 = 35 marks)

Draw diagrams wherever necessary:

 

  1. a) Write short notes on Eusporangium and Leptosporangium.

(OR)

  1. b) Briefly outline the classification of Pteridophytes proposed by Reimer.

 

  1. a) Describe the strobilus of Lycopodium.

(OR)

  1. b) Describe the cone of

 

  1. a) Give an account on general characters of Gymnosperms.

(OR)

  1. b) Bring out the salient features of coniferales.

 

  1. a) Explain the structure of female cone of Pinus.

(OR)

  1. b) Describe the female strobilus of

 

  1. a) Explain the different types of fossils.

(OR)

  1. b) Write short notes on

 

PART – C

 

Answer any three of the following, each answer not exceeding 1200 words:

Draw diagrams wherever necessary:                                                    (3 x 15 = 45 marks)

 

  1. Write an account on stelar evolution in Pteridophytes.
  2. Write a brief account on morphology & reproduction in Marsilea.
  3. Write short notes on (i)   Affinities of gymnosperms with angiosperms.

(ii)  Cycadales

  1. Describe the male and female cone of Cycas.
  2. Write notes on (i) Lepidodendron

(ii) Williamsonia

 

 

 

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