LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & BIOTECH SECOND SEMESTER – APRIL 2008 AZ 2102 - ANIMAL DIVERSITY Date : 25-04-08 Time : 1:00 - 4:00 Dept. No. DE 3 Max. : 100 Marks PART - A Answer ALL the questions. 10 x 2 = 20 Marks 1. What is a trophozoite? 2. Write a note on radula. 3. Drawn a labeled diagram of tenth segment in leech. 4. What is medusa? 5. Comment on the last abdominal appendages of prawn. 6. What is gravid proglottid? 7. Comment on hirudin 8. Comment on Scolex of tapeworm? 9. What is pectin? 10. What is planula larva? PART – B Answer any FOUR of the following 4 x 10 = 40 Marks 11. Explain the digestive system of frog. 12. Write notes on the life cycle of Ascaris 13. Explain pulmonary respiration in frog. 14. Give the life cycle of Obelia colony. 15. Explain water vascular system of starfish. 16. Give the life cycle of Entamoeba histolytica. PART – C Answer any TWO of the following 2 x 20 = 40 Marks 17. Describe the life cycle of Taenia solium. 18. Explain in detail digestive system of leech. 19. Give in detail respiration in birds. 20. Write an essay on parental care in fishes. 1