Environmental Studies Paper-2

Paper-2

 Environmental Studies (Qualifying Paper) 

Compulsory Course on Environmental Studies for Undergraduates of University of Delhi [One Semester]

The Question paper contains 4 printed pages | 5176

B.Sc/B.Sc(Hons.)

ES-111 - Environmental Science

Time - 2 Hours | Maximum Marks-45

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

Answer Section A and B on separate answer books.

**Section A**

Answer Three questions including

Question No. 1, which is compulsory.

1. (a) Define any five of the following terms:  **1X5=5**

(i) Greenhouse effect

(ii) Photovoltaic Cell

(iii) Community of Plants

(iv) Degraded lands

(v) Social Forestry

(vi) Food Chain

(vii) Endangered Species

(b) Write the botanical names of any three: 0.5X3=1.5

(i) A common tree

(ii) A wild Plant

(iii) A shrub

(iv) Any tree used for afforestation

(v) Any hydrophytic plant

(c) Comment briefly on any three of the following; 2x3=6

(i) Concept of Sustainable Development

(ii) Methodology and advantages of Alley-cropping;

(iii) Need for conservation of Natural Resources;

(iv) Environmental friendly practices in industries.

2. What are fossil fuels? How their excessive use influence the environment? **5**

OR

What is the need for Environmental Impact Assessment? Explain the concept using an example?

4. Explain any two of the following of the following:  2X2.5=5

(a) Environmental Studies are multidisciplinary in nature.

(b) Biodiversity is under threat.

(c) Solar energy harnessing is important for India.

(d) Deforestation leads to soil erosion.

** Section B**

Answer Three questions in all, including Question No. 1 which is compulsory.

1. (a) Define the following:

(i) Eutrophication;

(ii) Limiting factor principle;

(iii) Smog

(iv) Flood Plain

 

(b) Differentiate between any three of the following:

(i) El Nono and La Nina;

(ii) Closed loop recycling and Down cycling;

(iii) Primary pollutant and Secondary pollutants;

(iv) Ecological extinction and biological extinction.

(c) Write brief notes on : **4**

 (i) Tsunami

 (ii) Global Warming

(d) Give the names of any three endangered animals. **1.5**

2. What is ozone-layer depletion? Discuss its possible causes and effects.

OR

What is seismicity? How is it responsible for natural disasters? **5**

3. River Yamuna gets highly polluted as it passes through Delhi. Give the reasons and possible remedies.

OR

Discuss the environmental impacts of mining. **5 **

4. Write short notes on any two of the following:  **5**

(a)Desertification;

(b) Effect of pollution on monuments of National Importance;

(c) Management of domestic waste