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ISC Class XII Exam Question Papers 2012: Environmental Science

January 16, 2014

ENVIRONMENTAL SCIENCE

(Three hours)

(Candidates are allowed additional 15 minutes for only reading the paper.
They must NOT start w riting during this time.)

…………………………………………………………………………………………………………………………………………………………………………………..

Answer Question I (compulsory)from Part I and five questions from Part II, choosing at least

one question from each of the Section A, B and C.

The intended marks for questions or parts of questions are given in brackets [ ].

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PART I

Question 1 [20]

(i) Mention any two tribal rights.
(ii)     What is a trade mark?
(iii)   What is the aim of Green politics?
(iv)    Explain JFM.
(v)     Mention two indicators of soil health.
(vi)    What is free trade?
(vii)   State two advantages of protectionism.
(viii) What is GNP?
(ix)   Classify resources.
(x)     What is land stewardship?

PART I
Answer five questions in all, choosing at least one question from each of the
Sections A, B and C.

SECTION A

Question 2 [10]

(a) What is meant by age structure of a population? Explain three population pyramids and illustrate your answer with suitable diagrams.

(b) What is genetic erosion? What are the causes of genetic erosion in animals and what steps can be taken to prevent it?

Question 3 [10]

(a) Critically examine the successes and failures of Project Tiger in its 35 years of implementation.

(b) With increase in income and educational level of women, there is a significant decline in birth rate. Justify the statement.

Question 4 [10]

(a) What is Deep Ecology? Discuss the main principles of Deep Ecology.

(b) What are the four laws of ecology propounded by Barry Commoner?

SECTION B

Question 5 [10]

(a) Differentiate between sustainable agricultural practices and conventional agricultural practices. For each of the practices, explain two methods.

(b) What are the push and pull factors and what is their impact on the rural sector? Question 6

(a) What is food security? Discuss the problems associated with achieving food security in the Third World Countries.

(b) What are the various constraints faced by the government in tackling the problems related to urban development?

Question 7 [10]

(a) Discuss in detail any three techniques for maintaining the fertility of soil.

(b) Green Revolution had increased the agricultural production dramatically, but led to the decline of per capital availability of land and water. Justify the above Statement with suitable examples.

SECTION C

Question 8 [10]

(a) What is I.P.R? Discuss any four types of I.P.R.

(b) What are transnational corporations? Why are they more effective while dealing with environmental problems?

Question 9 [10]

(a) Write short notes on: