LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – ADVANCED ZOOLOGY & BIOTECH.
FIRST SEMESTER – NOVEMBER 2012
AZ 1506/1503/1500 - INVERTEBRATA
Date : 08/11/2012
Time : 1:00 - 4:00
Dept. No.
Max. : 100 Marks
PART - A
Answer ALL questions:
(10 x 2 = 20)
01. What are the functions of contractile vacuole?
02. Comment on gemmules.
03. Differentiate pseudocoelomate from coelomate animals.
04. Define polymorphism. Give an example.
05. Comment on solenocytes.
06. What are the functions of parapodia of Nereis?
07. Name any four nematode parasites of man.
08. Differentiate gill books from book lungs. Give examples.
09. Name the types of pedicellariae.
10. Comment on glochidium larva.
PART - B
Answer any FOUR of the following questions:
(4 x 10 = 40)
11. Give an account on life cycle of Plasmodium in Anopheles mosquito.
12. Describe diagnostic features and classification of Phylum Platyhelminthes up to class
level with suitable examples.
13. Explain the cephalic appendages of prawn.
14. Draw a neat labelled diagram of T.S. of Leech.
15. Describe male and female reproductive systems of Pila globosa.
16. Explain the structure, affinities and systematic position of Peripatus.
PART - C
Answer any TWO of the following questions:
17. Define coral reefs. Discuss the theories for their formation.
18. Give an account of social life in insects.
19. Explain the different types of mouth parts of insects and their significance.
20. Describe the larval forms of Echinoderms.
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(2 x 20 = 40)