LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – ADV. ZOOLOGY & BIO-TECHNOLOGY

TS 2

FIRST SEMESTER – APRIL 2006

                                                              AZ 1500 – INVERTEBRATA

(Also equivalent to ZO 1500)

 

 

Date & Time : 28-04-2006/9.00-12.00         Dept. No.                                                       Max. : 100 Marks

 Part A                                    (Answer All)                          10 ´ 2 = 20

 

1. What is coelom?
2. Comment on histolysin
3. Mention the function of hirudin.
4. What is cyclosis?
5. What is hectocotylised arm?
6. What are dermal ossicles?
7. What is statocyst?
8. What is binomial nomenclature?
9. Define metamerism.
10. Comment on choanocyte.

Part B                                     (Answer any four)                 4 ´ 10 = 40

 

11. Explain the endoerythrocytic cycle.
12. Explain the life history of Ascaris.
13. Explain the cephalic appendages of prawn.
14. Describe the structure of Paramecium.
15. What are coral reefs? How it is formed? Explain.
16. Discuss the external characters of leech .

Part C                                     (Answer any two)                              2 ´ 20 = 40

17. Explain the phylogenetic significance of Peripatus.
18. With a suitable diagram explain the water vascular system in starfish and add a note on its function.
19. What is metagenesis? Explain with a suitable example.
20. Write an essay on reproduction in Protozoa.

 

 

 

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