LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

           B.Sc. DEGREE EXAMINATION – ADVANCED ZOOLOGY & BIOTECH.

DE 7

THIRD SEMESTER – APRIL 2008

AZ 3502 – ENVIRONMENTAL BIOLOGY

 

 

 

Date : 29-04-08                  Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

 

Answer ALL questions in a few sentences                                                    (10 x 2 = 20 marks)

 

1. Define thermocline.
2. Differentiate autecology and synecology.
3. Define commensalism.  Give example.
4. What is ecological succession?
5. What are food chain and food web?
6. Differentiate plankton from nekton.
7. What is green house effect?
8. Differentiate pollutant and pollution.
9. What are renewable and non-renewable resources?
10. Expand the following UNEP and WWF.

PART – B

 

Answer any FOUR of the following questions                                       (4 x 10 = 40 marks)

 

1. Define biogeochemical cycle.  Explain Carbon Cycle.
2. Explain the types of inter specific animal relationships with examples.
3. Give an account of inter tidal rocky shore fauna and their adaptations.
4. Describe the social life in termites.
5. Explain the biological effects of light as an abiotic factor.
6. Give an account of air pollution and its control measures.

 

PART – C

 

Answer any TWO of the following questions                                         (2 x 20 = 40 marks)

 

1. Describe the various attributes of animal population.
2. Give an account of components of ecosystem and ecological pyramids.
3. Explain the various effects of water pollution and its control measures.
4. Write an essay on wildlife conservation and management in India.

 

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