DE 39

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc DEGREE EXAMINATION – ZOOLOGY

SIXTH SEMESTER – APRIL 2008

Z 651/ Z618 AQUACULTURE

 

 

 

Date : 29/04/2008                Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

Section-A

Answer all question                                                                                                   10×2=20

1. What is aquaculture?
2. Differentiate acclimatization from acclimation.
3. What is shell fishery?
4. What is sullage?
5. Define lake.
6. Mention the gases in the air bladder.
7. Draw and label a placoid scale.
8. What are minor and major carps?
9. Define spawning.
10. Give the scientific names of Gangetic eel and Hammer headed shark.

 

Section-B

Answer any FOUR                                                                                                   4×10=40

1. Briefly explain exotic fishes.
2. Explain Elasmobranch fishery.
3. Write notes on sardines and mackerels.
4. Explain Weberian ossicles.
5. Write notes on electric organs in fishes
6. Write notes on ultimobranchial glands.

 

Section-C

Answer any TWO                                                                                                     2×20=40

1. Write an essay on aquatic weeds and their control.
2. Explain induced breeding.
3. Categorise the fishing crafts and gear.
4. Elaborate composite fish culture.

 

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