LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

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

THIRD SEMESTER – APRIL 2012

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

 

 

 

Date : 24-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

 

ANSWER THE FOLLOWING, EACH ANSWER WITHIN 50 WORDS ONLY:

(10 x 2 = 20 Marks)

 

1. What is Author Citation?
2. Expand ICBN, What is Binomial? Give one example.
3. What is Cyathium?
4. Explain Adnation in Solanaceae.
5. Bring out the importance of Essential Oil.
6. Give the Botanical name and Economic uses of Jute.
7. Define Palynology and give its application.
8. What is double fertilization?
9. What is Parthenocarpy?
10. Write short note on Cellular Endosperm. Give example.

 

 

PART – B                                                     

ANSWER THE FOLLOWING, EACH ANSWER WITHIN 500 WORDS:

DRAW DIAGRAMS WHEREVER NECESSARY:                                              (5 x 7 = 35 Marks)

 

11. a) List the differences between Linnaeus, and Bentham & Hooker classifications.

(or)

1. b) Write short notes on biochemical and molecular systematics.
2. a) Enumerate the salient features of Poaceae and add a note on its economic

significance.

(or)

1. b) Describe in detail the flower of Capparidaceae. Compare it with Anacardiaceae.

 

13. a) Give Botanical name, Family and Morphology of useful part and uses of Opium and

Tobacco.

(or)

1. b) List any three timber yielding plants and give their economic uses.

 

14. a) Write brief account on Anther.

( or )

1. b) Trace various changes associated with development of Ovule.

 

15. a) Write a brief note on Apomixis.

( or )

1. b) Write an account on Post Fertilization changes.

 

PART – C

 

ANSWER ANY THREE THE FOLLOWING, EACH ANSWER WITHIN 1200 WORDS:

DRAW DIAGRAMS WHEREVER NECESSARY:                                                    (3 x15 = 45 Marks)

 

16. What are the different types of Botanical keys used for identification of angiosperm? Explain

its applications.

17. Compare the salient features of Rubiaceae and Apocynaceae.
18. Give the Botanical name, Family, Morphology of useful part and Uses of Rice, Wheat,

Maize, Red gram & Pepper.

19. What is Cross Pollination? Explain in detail the different modes of Cross Pollination.
20. Explain the development of Embryo in Capsella.

 

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