COMBINED COMPETITIVE EXAMINATION (MAIN)
ZOOLOGY
Paper-I
Time 3 hours Full Marks 200
The figures in the right-hand margin indicate full marJCs for the questions.

Attempt five questions in all.


Question No.1 is compulsory.


Suitable diagrams may be drawn, wherever required.


1. Answer any ten of the following 4xlO=40


Write four important characters of Palaemon.
Differentiate between a butterfly and a moth.


What is grazing food chain?


What is fish lice?


State the importance of water fleas.


How does Paramecium feed?


What are 'wheyl animalcules'? How do they locomote?


Name the important characters of silverfish.




How does fish respire?


What are fish-food organisms?


. Write the scientific names of any four Helminth parasites.


What.is acid


93/DD5-2015jZOO-PljSet-A 1 [P.T.a.
Answer any ei(Jht of the following 5x8=40

Differentiate between poisonous and non-poisonous snakes.
Name the larval forms of Crustacea and Mollusca.
·What is chronobiology?
Explain the importance of chi square test.
Write about flightless birds.
Indicate the ecological role of. temperature.
What are conservation areas?
What are nematocysts? Indicate their role.
Indicate the importance of Penpatus.
What are pollutants?

Answer any five of the following 8x5=40
Highlight the status of prawn culture in India indicating the important cultivable species.
Explain the terms ecology and ecosystem. Comment on the importance of ecology.

Discuss inherent and learnt behaviour giving suitable examples.


Write about correlation and regression analysis.


Explain the adaptive radiations in reptiles.


What is biosphere reserve? Write about one biosphere reserve of Northeast India.


Describe the vision in Palaemon and cockroach.


ljl. Answer any four of the following lOx4=40

What is· ecological succession? Explain ecological succeSSIon in a pond ecosystem.


Discuss host-parasite relationship.


Explain the aerial adaptations of birds.


93/DD5-2015jZOO-PIjSet-A 2

Describe the causes of air pollution.


Northeast India is rich in its biodiversity. Discuss.


Write about the Project Tiger in India. Suggest the measures to conserve tiger population.


I
5. Answer any two of the following: 20x2=40
fa) Describe the locomotion in fishes. Comment on the role of fins in fish locomotion.

Discuss the role of hormones and pheromones in animal behaviour.


Give an account of canal system in Porifera giving suitable drawings.


6. Answer any four of the following: lOx4=40

Compare the structure of heart of frog, pigeon and rabbit with suitable diagrams.


Describe excretory systems of earthworm and Nereis.


Write about the important insect pests of crops.


What are coral reefs? How are they formed? Explain the importance of coral reefs.


Discuss the bionomics of malarial parasite and Trypansoma.
Explain the larval forms and affinities of Echinodermata.



7. Answer any two of the following 20x2=40

What are trophic levels? How does energy flow in an ecosystem? Explain ecological pyramids.


What are ,minor phyla? Why are these termed as 'minor phyla'? Discuss the salient features of anyone such phylum with examples.


Write about the important wild animals of Ihdia. Comment on the conservation of wildlife in India.


93/DD5-2015/Z00-PI/Set-A3

8. Write short notes on the following lOx4=40

Retrogressive metamorphosis


Induced breeding


Anatomical peculiarities and affinities of Urodela


Five Kingdom Classification


Discuss the following in detail lOx4=40

Parasitic protozoans


Biological clock and circadian rhymes


Parental care in fishes


Pisciculture and its importance


1.0. Answer the following in brief: 4xlO=40 Explain the levels of organization in biosphere.

Enumerate the differences between. a National Park and a Wildlife Sanctuary.


Differentiate between standard deviation and standard deviance.


Discuss the role of bacteria in nitrogen cycle.


Explain the process of pearl formation.


Comment on the important pests of rice.


Outline the different ecological niches.


Write the names of four endangered mammals and birds each of Northeast India.


Differentiate between symbiosis and commensalism.
lj) Examine the differences between endemic and exotic species.



93/DD5-2015jZOO-PIjSet-A 4 DDS-lO