Evergreen Science

Book: Evergreen Science

Chapter: 16. Sustainable Management of Natural Resources

Subject: Biology - Class 10th

Q. No. 10 of Periodic Test

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10

Name the old-age water harvesting techniques/structures of Rajasthan still in use today.

Khadins, tanks and nadis are the old-age water harvesting techniques/structures of Rajasthan still in use today. Khadins is a traditional way of harvesting rainwater and it is mainly followed by people of Rajasthan. These are very long earthen embankments which are built across the lower edge of the sloping farmlands which are called bund. Rainwater flows down the slopes and fills the bunds to form a reservoir. Pathways are made from bund to nearby well which are mainly dug behind the bund where water seeps and fills the wells.


Chapter Exercises

Periodic Test
Comprehensive Exercises (MCQ)
Comprehensive Exercises (T/F)

More Exercise Questions

1

List any two measures that you suggest for better management of water resources.
2

Why does the management of natural resources require a long-term perspective?
3

State what happened when the “Chipko Movement” spread across communities and media.
4

“Reuse is an important step in saving environment”. Justify.
5

List any two sources which add greenhouse gases to the environment.
6

How does mining cause pollution?
7

Every one of us can do something to reduce our consumption of various natural resources. List four such activities based on 3-R’s approach.
8

Suggest two ways to conserve forests.
9

Give an example to show that the prejudice against the traditional use of forest areas has no basis.
10

Name the old-age water harvesting techniques/structures of Rajasthan still in use today.
11

State two reasons of launching the “Ganga Action Plan”. Which bacteria was found in Ganga’s water indicating contamination?
12

State the meaning of biodiversity hotspots. What is the criteria of measuring biodiversity of an area?
13

What do the three R’s refer to? Explain the main purpose of following these strategies in daily life.
14

List four benefits that could be provided to the local people in Arabari forest range.
15

Mention two reasons to explain why forests and wildlife should be conserved.
16

Why management of natural resources should ensure equitable distribution of resources?
17

Local people around forests are referred to as “stakeholders” for conservation of forests. Give reasons.
18

Sustainable development implies a change in all aspects of life. Justify the statement.
19

What is the aim of water harvesting?
20

“Burning of fossil fuels results in global warming.” Justify the statement.
21

The construction of large dams leads to

(i) social, and


(ii) environmental problems. List two problems in each case.
22

“Industrialization is one of the main causes of deterioration of environment”. List any four reasons in favor of this statement.
23

Mention any reasons for which environmentalist protested against raising height of the “Sardar Sarovar Dam” on river Narmada.
24

What are fossil fuels? How are they formed?
25

List three reasons to justify the need to manage the available resources carefully.
26

List any four human activities responsible for the pollution of river water.
27

We should use coal and petroleum judiciously. Why? State any four reasons.

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