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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
B.Sc. DEGREE EXAMINATION ADVANCED ZOOLOGY AND BIOTECHNOLOGY
SECOND SEMESTER NOVEMBER 2016
AZ 2504/AZ 2502/AZ 2500 CHORDATA
Date: 12-11-2016 Dept. No. Max. 100 Marks
Time: 01:00-04:00
PART-A
Answer All the questions (10x2=20 marks)
1. What is meant by Velum?
2. What are Urochordates? Give example.
3. Draw a labeled diagram of pelvic girdle of frog.
4. What are paired fins and unpaired fins?
5. Distinguish turtle from tortoise.
6. Comment on the venom of cobra.
7. What is synsacrum?
8. Draw the quill feather.
9. What are Graffian follicles?
10. What is yolk sac placenta?
PART B (4x10=40 marks)
Answer any FOUR questions
11. Describe the affinities of Amphioxus.
12. Explain the different types of respiration in frog.
13. Describe the poison apparatus and biting mechanisms in snakes.
14. State adaptations of flying mammals.
15. Describe the fate of aortic arches is reptiles.
16. Give an account on extra-embryonic membranes.
PART C (2x20=40 marks)
Answer any TWO questions
17. Parental care is exhibited in Amphibia Substantiate.
18. Discuss the impact of terrestrialization.
19. Examine the flight adaptations in birds.
20. Describe the types of placenta in mammals.