Gauhati University Question Papers: Environmental Studies (NOV-DEC’ 2015)

Gauhati University Question Papers
Environmental Studies (NOV-DEC’ 2015)
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) Express in one word/term:                                              1x4=4

1)         Over nourishment of water bodies due to excessive nitrates and phosphates.
2)         Leader of Chipko Movement.
3)         An organism that lives in the absence of Oxygen.
4)         The first book to record endangered species.
(b) Illustrate any three of the following terms:                               2x3=6
1)         Food web.
2)         Project tier.
3)         Ecosystem.
4)         Non-renewable resources.
2. How does energy flow through ecosystem? What is the source of such energy? Explain.          5+5=10
Discuss the scope and importance of environmental studies.                  5+5=10
3. (a) What is conservation? State the major causes of extinctions of some of the wild animals and mention the measures that could be adopted to conserve them.                                             1+4=5
What do you mean by natural resources? How are they classified?                     1+4=5
(b) Name one of the inorganic components of an ecosystem. How does it help the ecosystem?                            1+4=5
Show with the help of a diagram the stages of a food chain. Which organism occupies the lowest position of an ecological pyramid?                                             4+1=5
4. Write short notes on any two of the following:                                              5x2=10
1)         Producers.
2)         Endangered species.
3)         Sanctuary.


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