Bharathiar University 2012-3rd Sem M.Sc BioTechnology ENVIRONMENTAL - Question Paper

Time: 3 hours

Maximum:75 marks

ans all ques.

part A - (10 X one = 10 MARKS)

1. Food web, Food chain

2. Biotic community concept

3. Green house effect

4. Ecosystem

5. Aquatic biota

6. Air pollution

7. Oxidation ponds

8. Rotating drums

9. Xenobiotics

10. Bio-pesticides

part B - (5 X five = 25 MARKS)

11.(a)Describe the concepts and theories of evolution.
Or
(b)Explain about ecological pyramids.

12.(a)Explain the harmful effects and control measures of Ozone layer depletion.
Or
(b)What is meant by acid rain? discuss the causes and effects of acid rain.

13.(a)Briefly explain the role of an individual in prevention of pollution.
Or
(b)Write about methods for measurement of pollution.

14.(a)Explain the physico-chemical properties of water.
Or
(b)What are the causes of waste water and provide a note on prevention of waste water.

15.(a)Write a brief notes on surfactants.
Or
(b)Explain the methods of disposal of municipal solid waste.

part C - (5 X eight = 40 marks)

16.(a)Explain the biotic community concept, structure and dominance.
Or
(b)Explain the flow of energy through the atmosphere and its utilities in an ecosystem.

17.(a)Describe the types, characteristic features, structure and functions of ecosystems.
Or
(b)Explain the Insitu and Exsitu conservation with their merits and limitation.

18.(a)Discuss about kinds of pollution and their effects.
Or
(b)Explain the methodology of environmental management.

19.(a)Define activated sludge, oxidation ditches, trickling filter, anaerobic digestion.
Or
(b)How will you collect the waste water for treatment process?

20.(a)Write notes on the issues of fertilizers and pesticides on modern agriculture.
Or
(b)Describe about solid waste management.

Earning:   Approval pending.