ENVIRONMENTAL EDUCATION

AHSEC CLASS 11 - QUESTION PAPER 2021

ALLOTMENT OF MARKS

The figures in the margin indicate full marks for the questions.

Section 1

1. (a) Answer in one or two words: (1 × 5 = 5)

1. Define biodiversity.
2. What is the name of the solid mantle of the earth?
3. Which day is observed as the World Environment Day?
4. Give the name of a Biosphere Reserve of Assam.
5. Write the full form of NIDM.

1. (b) Fill in the blanks: (1 × 3 = 3)

1. The First Decade of Action for Road Safety' is ________.
2. Tiger is _______ level consumer of ecosystem.
3. Cholera is a ________ disease.

Section 2

2. Write short accounts of (any five): (2 × 5 = 10)

1. Food chain
2. Ex situ conservation
3. Sources of sound pollution
4. Causes of threats to biodiversity
5. The Wildlife (Protection) Act, 1972
6. Acid rain
7. Greenhouse effect

Section 3

3. Define and distinguish (any four): ((2+1) × 4 = 12)

1. Lithosphere and Hydrosphere
2. Producer and Consumer
3. Renewable and Non-renewable resources
4. Pollutant and Pollution
5. Road marking and Zebra crossing
6. Biodegradable and Non-biodegradable wastes

Section 4

4. Answer the following questions (any two): (5 × 2 = 10)

1. Describe the various air pollutants.
2. What do you mean by global warming? Mention two consequences of global warming.
3. Write the importance of health and hygiene.
4. Write the major causes of deforestation in N-E India.