DISTANCE EDUCATION
M.Sc. (Zoology) DEGREE EXAMINATION, DECEMBER 2017.
ANIMAL DIVERSITY
Time Three hours Maximum 100 marks
PART A — x 8 40 marks)
Answer any FIVE of the following in about 300 words each.
1. Explain various extracellular components of a metazoan
body.
2. Write an account on Linnean classification.
3. Enumerate the characteristic features and adaptive
radiations observed in acoelomates.
4. Write a brief account on habits, habitats and external
characteristics features of Hirudinea.
5. Explain the forms and functions of Hemicordata.
6. Write an account on organization of Urochordata.
7. Explain briefly the structural functional adaptations seen
in jawless fishes.
8. Trace the early evolution of terrestrial vertebrates.
PART B — × 15 60 marks)
Answer any FOUR of the following in about 500 words each.
9. What are the criteria adopted by Linnaeus for the
classification of animals? Explain.
10. Discuss on Nematoda phylogeny with a note on their
adaptive radiations.
Sub. Code
11
DE-3053
2
wk10
11. Explain the forms, functions and adaptive radiations of
Dinoflagellata
Ciliophora
Euglenozoa.
12. Trace the Arthropod phylogeny.
13. Explain the origin, evolution and diversity of
Osteichthyes.
14. Discuss the ancestral relationship with the typical
characteristic features of major fishes.
15. Write an essay on evolution of man.
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