Download DU (University of Delhi) B-Tech 4th Semester 1541 Environmental Studies Question Paper

S. No. of Question Paper : 1541

Unique Paper Code : ES2014

Name of the Paper : Environmental Studies

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Name of the Course : Undergraduate Course [Compulsory and Qualifying]

Semester : II

Duration : 3 Hours

Maximum Marks : 75

(Write your Roll No. on the top immediately on receipt of this question paper.)

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Note : Answers may be written either in English or in Hindi; but the same medium should be used throughout the paper.

Attempt any five questions.

All questions carry equal marks.

1. (a) Fill in the blanks :
   1. Ozone layer depletion is caused by .......
   2. Each link in a food chain is called .......

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   3. World Environment Day is observed on ....... every year.
   4. ....... region is a biodiversity hotspot in India.
   5. ....... is a non-renewable source of energy.
   (b) Explain any five of the following : 5x2=10
   1. Food web
   2. Soil erosion

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   3. Poaching
   4. Eutrophication
   5. Sustainable development
   6. Ecosystem
   7. Global warming.

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2. Write a short paragraph on any three of the following : 3x5=15
   1. Aquatic ecosystems
   2. Wind energy
   3. India as a mega-diversity nation
   4. Noise pollution and human health

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   5. Multi-disciplinary nature of Environmental Studies.
3. (a) Describe any five services we obtain from our planet’s biodiversity. 5 (b) What are the major threats to the forests of India ? 5 (c) What are grasslands ? Why should they be conserved ? 5
4. (a) What is air pollution ? Differentiate between primary and secondary pollutants. How does air pollution impact humans and plants ? 2+3+5 (b) Discuss the reasons for depletion of water table in Delhi. What measures should be taken to remedy this problem ? 2+3
5. (a) Differentiate between ex situ and in situ conservation. 5 (b) What are biosphere reserves ? Name any two biosphere reserves of India and explain how these help in the conservation of biological diversity ? 10

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6. (a) What are alternate sources of energy ? Give examples. Why is it important to develop alternate sources of energy ? 5 (b) Critically evaluate the use of nuclear energy with reference to environment and human health giving suitable examples. 10
7. (a) How do indigenous communities and their traditional practices contribute towards conservation of natural resources ? 5 (b) Evaluate the role of various environment related laws of India in environmental conservation. 10
8. (a) “Social and electronic media are playing a significant role in generating environmental awareness and education.” Comment. 8 (b) Do the gains from major development projects outweigh the losses due to displacement of people ? Comment. 7

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