Gauhati University Question Papers
Environmental Studies (NOV-DEC’ 2012)
(For B.Com)
Full Marks: 75
Time Allowed: 3 hours
Answer either in
English or Assamese
The figures in the
margin indicate full marks for the questions
1.
(a) Fill in the blanks: 1x5=5
1)
The gas responsible for Bhopal Gas Tragedy 1984
is _____.
2)
Rio conference on Environment and Development
was held in the year _____.
3)
_____ is observed as world environment day.
4)
The groups of biotic component of an ecosystem
are producer, consumer and _____.
5)
The full form of WHO is _____.
(b) Write the technical terms for each of the following
statements: 1x5=5
1)
Over-nourishment of water bodies due to
excessive nitrates and phosphates.
2)
A biological community and its physical
environment exchanging matter and energy.
3)
A protected area aimed at betterment of wildlife
but where human activities are not allowed.
4)
The land area from which water flows under
gravity into river or sea.
5)
Scientific study of human population.
2.
Distinguish between: 2x5=10
a)
Primary and secondary pollutants.
b)
Weather and climate.
c)
Rare and vulnerable species.
d)
Wetland and wasteland.
e)
Troposphere and stratosphere.
3.
Answer any three questions from the following:
a)
Discuss the multidisciplinary nature of
environmental studies. 5
b)
What do you mean by natural resources? How are
they classified? Give examples. 1+4=5
c)
What do you mean by ecosystem? What are the
biotic and a biotic component of an ecosystem? Explain. 1+4=5
d)
What are ex-situ and in-situ conservation of
biodiversity? Explain with examples. 5
e)
What is noise pollution? Discuss the measures to
control noise pollution. 1+4=5
f)
What is rain water harvesting? What are the
objectives of rain water harvesting? 2+3=5
4.
Answer any four questions from the following:
a)
What do you mean by deforestation? Discuss the
major causes and consequences of deforestation. 2+4+4=10
b)
What are the mineral resources of northeast
India? Discuss the environmental problems associated with their over
exploitation. 3+7=10
c)
Explain the terms – Food chain, food web and
ecological pyramids. 3+3+4=10
d)
What is biodiversity? Mention the major threats
to biodiversity and explain them briefly. 2+2+6=10
e)
What do you mean by water pollution? What are
the different causes of water pollution? Explain. 2+8=10
f)
What do you mean by disaster management? What
management strategy you can adopt during flood? 4+6=10
g)
What do you mean by sustainable development?
Trace the evolution of this concept. Why is this concept so significant today? 3+3+4=10
h)
Write short notes on: 5+5=10
1) Green
House Effect.
2) Role
of an individual in conservation of natural resources.
***
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