C S MAIN 2015 ZOOLOGY (Paper


SECTION ‘A’

1. Answer the following in about 150 words each 10x5=50

What are minor phyla Enlist minor phyla with suitable examples. 10

What is Jatinga bird mystry Is it related with bird migration Explain. 10

‘Herdmania is a primitive and degenerate descendent of ancestral chordates’.
Explain. 10

Apis is known for social behaviour. Discuss. 10

Polychaetes exhibit different modes of life adapted to habitats. Elaborate the
statement. 10

Give an account of locomotion in Protozoa indicating locomotor organelle with
suitable examples. 15.

What are corals and coral reefs Describe different types of coral reefs and their
formation indicating different theories. 15

Enumerate functions and main components of endoskeleton of vertebrates. Give an
account of types of jaw suspensoria in vertebrates with suitable diagrams. 20

3. Discuss parasitism in ‘Copepoda’. Comment on structural peculiarities of parasitic
copepods. 15.

3. Give an illustrated account of the reproductive system, life history and development of
Asterias. 15

Give an account of locomotion in Pisces indicating the role of muscles and fins. How
do some fish fly Comment. 20

4. Sphenodon is the most primitive and crocodilians are most advanced of all living
Reptiles’. Discuss the statement. 15

Give an account of fresh water, egg laying and pouched mammals with suitable
examples. 15

Give an account of gills and accessory respiratory organs in vertebrates with suitable
examples. 20

SECTION ‘B’

5. Answer the following in about 150 words each: 10x5=50

5 What is ‘Ganga action planr Explain. 10

5 Explain the role of pheromones in alarm spreading. 10

5 "Biotechnology is a vital tool in modem forensic science’. Comment. 10

5 Differentiate between one-way and two-way analysis of variance (ANOVA).
Comment on its applications in biostatistics. 10

5 Electrophoresis is a valuable tool in resolving cryptic-species complexes. Discuss.
10

6. Discuss social hierarchies in Primates. 15

6. What is meant by distribution Explain patterns of distribution in natural populations.
15

6. What are biogeochemical cycles? Discuss nitrogen cycle indicating the role of
atmospheric N-fixation, the role of bacteria and the impact of human activity. 20

7. What is chromosome painting Comment on its principles and scope. 15

7. Give an account of causes and consequences of pollution of aquatic resources and the
problem of cultural eutrophication. Suggest measures for abatement of water
degradation. 15


7. Define biodiversity hot-spot and mention the criteria of its selection. Write about
biodiversity hot-spots of the Indian sub-region giving their saMent features. 20

8. Wliat is Euphenics Explain its use for improvement of human welfare. 15

8. Discuss the status and scope of prawn culture in India. Mention commercially viable
and cultivable species of fresh water and brackish water prawns. 15

8. What are transgenic animals How are they produced Explain their contributions to
human welfare. Comment on ethical concerns in relation to transgenesis. 20