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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
M.Sc. DEGREE EXAMINATION ZOOLOGY
FIRST SEMESTER NOVEMBER 2016
ZO 1819 PHYLOGENY OF INVERTEBRATA CHORDATA
Date: 02-11-2016 Dept. No. Max. 100 Marks
Time: 01:00-04:00
PART A
Answer ALL the questions (10 x 2 20 marks)
1. Define symmetry with suitable examples
2. Give an account on inter-relationship between annelida and arthropoda
3. Write a short notes on archeopterix
4. Give the dental formulae of the following Man Dog
5. Write the Zoological name of the following: Camel Crow
6. Differentiate enterocoelic coelom from schizocoelic coelom
7. What is ductuscaroticus?
8. Mention any four affinities of prochordates
9. Explain Megalopae
10. Differentiate quill from filoplume feathers
PART B
Answer any FOUR questions x 10 40 marks)
11. Give an account of the origin and evolution of vertebrates
12. Discuss in detail the affinities of placoderms
13. Give a comparative account on the brain and heart in vertebrates.
14. Describe the pathogenicity and parasitic adaptations seen in Fasciola
15. Explain the urinogenital systems of invertebrates
16. Discuss on affinities and systematic position of minor phyla nemertinea
PART C
Answer any TWO questions x 20 40 marks)
17. Write an essay on ostracoderms and explain the evolution of agnatha
18. Give a comparactive account on the nervous system of invertebrates and chordates
. Highlight the phylogeny
19. Write an essay on the life cycle, pathogenicity and control of echinococcus and
1rypanosome
20. Give an account on the adaptive radiation of Fishes and amphibans.