LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – ADVANCED ZOOLOGY & BIOTECH.
SECOND SEMESTER – APRIL 2008
AZ 2500 - CHORDATA
Date : 23-04-08
Time : 1:00 - 4:00
Dept. No.
DE 4
Max. : 100 Marks
Part – A
Answer all
Explain / Define
1. Urochordate
2. Placoide scale
3. Heterocercal tail
4. Amniota
5. Agnatha
6. Flightless birds
7. Marsupials
8. Autodiastylic jaw suspension
9. Aortic arches
10. Heterodont dentition.
10 x 2 = 20
Part – B
Answer any Four
4 x 10 = 40
11. Write notes on the affinities of Amphioxus.
12. Explain the structure and function of Arterial system of shark.
13. Briefly write the classification of Reptilia
14. Describe the Poison apparatus & biting mechanism of snake.
15. Write short notes on Flight adaptations
16. Briefly write about Aortic arches of Birds and mammals.
Part – C
Answer any TWO
2 x 20 = 40
17. Give an account of Parental care in Amphibia.
18. Describe the identification of Poisonous snakes and add a note on any two Poisonous snakes
of south India.
19. Write an essay on Aquatic mammals.
20. Write an account on placentation in mammals.
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