N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Zoology, Part-II
PAPER-XVI
(Ichthyology and Inland Fisheries)
Annual Examination, 2017
Time: 3 Hours. Full Marks: 80
Answer five questions in all, selecting at least Two Questions from each Group.
All Questions carry equal marks.
GROUP
1. Describe the air-breathing organs of catfish Heteropneustes fossilis.
2. Describe the structure and function of Weberian ossicles.
3. Describe mechanism of gill ventilation in teleostean gills with special reference to buccal
pressure and opercular suction pump.
4. Give an account of air-breathing organs of Anabas testudineus.
5. Write notes on any Two of the following:—
Gonado somatic index
Mucous gland
Gill diffusing capacity
Channa punctatus
GROUP
6. Describe the ecological status of Estuaries.
7. Describe the control of Physico-chemical factors in management of Fish farm.
8. What are the objective of fish culture Describe fish culture in fresh water.
9. Write an essay on cancer of fishes.
10. Write notes on any Two of the following:—
Long drag net
Pond fertilization
Cultural species of Prawn
Hydrography