Assam University 2007 B.A Environmental Studies And Research - Question Paper

IV Semester Examination, June 2007

Environmental Studies

Time: three Hours Max. Marks: 90

Instruction: Draw diagrams wherever necessary.

PART-A

I. ans any ten of the following: (2X10=20)

i) Distinguish ranging from Ore and Mineral.
ii) What is meant by Rotation crop cultivation?
iii) What is meant by B.O.D and C.O.D?
iv) elaborate primary consumer and why they are called so?
v) Write 2 issues using Fossil fuel as a source of energy?
vi) What is meant by sustainable growth?
viii) elaborate checkdams?
ix) Write 2 adverse impacts of overgrazing?
x) Write 2 measures to prevent soil erosion?
xi) What is food chain? provide example?
xii) elaborate the hot spots of Biodiversity?

PART-B

2. Write explanatory notes on any 5 of the following: (5x5=25)

a) explain ranging from Renewable and non-renewable energy resources with an illustration.
b) Write and discuss the environmental significance of Air act?
c) elaborate the causes and remedial measures of ozone layer depletion?
d) elaborate the issues involved in resettlement and rehabilitation of tribals?
e) explain marine pollution with an example.
f) explain pond as an ecosystem.
g) India is a mega diversity Nation. explain.

PART-C

ans any 3 of the following: (3x15=45)

3. explain the impact of population on environment.
4. explain the importance and conservation of biodiversity.
5. explain ecological succession.
6. discuss the environmental impacts of mining activities.
7. explain causes and effects of soil erosion? Suggest suitable soil conservation practices.

Earning:   Approval pending.