ENVIRONMENTAL SCIENCE AND ENGINEERING Question Paper - 04

ENVIRONMENTAL SCIENCE AND ENGINEERING

Time: 1.30 hours                                        Max. Marks: 50 marks

Answer all questions

PART – A (5 X 2 = 10 Marks)

1. Define Ecosystem.

2. What is ecological succession? Mention their types.

3. What are the abiotic components of an ecosystem?

4. What are producers, consumers and decomposer?

5. What are hot spots of biodiversity? Mention Criteria for hot spots.

Part –B (40 Marks)

6. a) i) Define Ecological pyramids and Explain different types of ecological pyramids?  (8)

    ii) What are threats to biodiversity? Discuss.                           (8)

[OR]

b) i) Explain the components, structure and functions of a forest ecosystem?                                                                                    (8)

    ii) What are the values of biodiversities? Explain.               (8)

7. a) i) Write the structure (or) components of an ecosystem .     (8)

       ii) Write short notes on energy flow in the ecosystem

and food web.                                                                                (8)

[OR]

b) Explain different methods of In-situ, Ex-situ conservation of biodiversity along with their merits and limitations.             (16)

8. a) Write note on food chain? Mention their types.                              (8)

[OR]

    b) Explain the role of biodiversity at national and local levels.(8)