LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

ED 05

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

THIRD SEMESTER – November 2008

PB 3502 – ANGIOSPERM TAXONOMY, ECO. BOTANY & EMBRYOLOGY

 

 

 

Date : 06-11-08                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART – A

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

• A basic unit of Taxonomy is species which was introduced by

1. John ray b) Bentham and Hooker                     c) Linnaeus      d) Hutchinson

• Antibiotic tomatine is obtained from the seeds of

1. Solanum tuberosum b) Lycopersicum esculentum
2. Crotalaria juncea d) Phoenix Sylvestris

• Latex is not present in

1. Euphorbia b) Hevea          c) Cucurbita    d) Calotropis

• Herkogamy is a contrivance for

1. Allogamy b) Autogamy   c) Chasmogamy                      d) Cliestogamy

• Double fertilization occurs in

1. Ovary b) Ovule          c) Embryo        d) Anther
2. State Whether the following statements are true or false: (5 x 1 = 5 Marks)

• Wheat belongs to the family Apocynaceae
• Cucumis sativus in the botanical name of water melon
• Tapetum is a part of anther wall
• Long fibres of cotton seed are known as lint
• In groundnut, the oil is present in embryo
• Complete the following:                         (5 x 1 = 5 Marks)
• Stamens arranged in two bundles are referred as ______________
• Cyathium inflorescence is the characteristic feature of family _______________
• The medicine quinine is obtained from the plant ________________
• The micropyle and chalaza are in straight line in _____________ ovule.
• Formation of fruit without fertilization is called _________________

1. Answer the following each within 50 words:                                     (5 x 1 = 5 Marks)

• What is epipetalous Stamen?
• Write short notes on Synandrous Condition.
• What is Pollen Kitt?
• Distinguish between spices and condiments.
• What is Apomixis?

PART – B

 

Answer any FIVE of the following each within 350 words:                           (5 x 8 = 40 Marks)

 

• Describe the floral characters of the families Apocynaceae and Amaranthaceae
• Write short notes on herbarium techniques
• Describe the inflorescence of Euporbiaceae
• Give the economic importance of any two cereals and two pulses
• Describe the development of male gametophyte
• Write the botanical name, family, morphology of useful parts and uses of any four timber yielding plants.
• Briefly describe the process of double fertilization
• Describe the structure and development of tetrasporic embryosac

PART – C

 

Answer the following each within 1500 words:                                                (2 x 20 = 40 Marks)

 

• a) Give an outline of Bentham and Hooker’s classification. Add a note on its merits and demerits

(or)

1. Compare the salient features of the family capparidaceae and cucurbitaceae.

 

• a) Explain the structure and development of Nuclear and cellular endosperm

(or)

1. Explain the structure and development of monocot embryo.

 

 

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