B.Com-BBM BHM B.COM 2nd Sem ENVIRONMENTAL STUDIES(Bangalore University, Bangalore-2007)

II Semester B. Com/B.B.M/B.H.M. Examination, May/June 2007
(Semester Scheme)
ENVIRONMENTAL STUDIES
(Common to all B.Com/BBM/BHM. 2nd Semester Fresh Students only)

Time : 3 Hours Max. Marks: 90

Instruction: Draw diagrams wherever necessary.

PART-A

I. Answer any ten of the following: (2 x 10=20)

i) What are natural resources?
ii) What is shifting cultivation?
iii) What is an aquifer?
iv) What are minerals?
v) What are the types of mining?
vi) What is carrying capacity?
vii) Differentiate renewable and non-renewable energy sources and give an example of each.
viii) What are shelterbelts?
ix) What is a food chain? Give an example?
x) Define Ecological succession?
xi) Differentiate in-situ and ex-situ conservation.
xii) What is Biomagnification? Give an example.

PART-B

2. Write explanatory notes on any five. (5x5=25)

a) Causes and consequences of Deforestation.
b) Solar Energy.
c) Water Logging.
d) Universal energy flow model.
e) Biogeographic habitats of India.
f) Endangered species.
g) Acid rain.

PART-C

Answer any three questions. (15x3=45)

3. "Development leads to destruction". Substantiate with special reference to dams.
4. What are the agents of soil erosion? Suggest suitable soil conservation practices.
5. a) "India is a Mega-diversity nation". Amplify.
b) What are hot spots of Biodiverstiy? Mention the Indian hot spots.

6. a) "Noise is a sinister threat". Substantiate with reference to auditory and non-auditory effects of noise.
b) Give the noise standards recommended by CPCB.

7. "Population, consumerism and waste production are interrelated". Comment.