X(10th) Management of Natural Resources Board Questions Banks with solution

Extra marks: Summative Assessments: Important Board Questions with answers

1. What does the high level of total coli form count in river Ganga indicates?

Ans: It indicates that water is contaminated by disease causing micro-organisms.


2. What are “biodiversity hot spots”? What is the measure of the biodiversity?


Ans: Forests are “biodiversity hot spots”. One measure of the biodiversity of an area is the number of 
species found here.


3. Which programme was started to replenish forests?


Ans: Silviculture


4. Why scarcity of water is there in our country in spite of nature’s monsoon bounty?


Ans: . It has taken place due to the following reasons:

(a) Failure to sustain water availability underground which has resulted largely from the loss of vegetation cover.  

(b) Diversion for high water demanding crops.  

(c) Pollution from industrial effluents and urban wastes.

5. What is the effect of continuous depletion of ground water along coastal region?

Ans: The effect of continuous depletion of ground water along coastal region will lead to movement of saline 
sea water into freshwater wells then spoiling their quality.


6. Why is dependence of man on nature greater than that of any other organism?


Ans: Man’s dependence on the environment is greater than that of other organisms  because man:

(a) Develops curiosity for more comforts and security.  

(b) Consumes large amount of material and energy.

(c) Develops a new kind of socio-economic environment which consists of things developed by man through his tools and techniques.

7. In addition to low rainfall, what are the other reasons for non-availability of water in arid and semi-arid 
zones of our country?


Ans: (a) Flowing of rain water and lack of management to harvest it 
(b) Ground water is pumped out for high water demanding crops.

(c) Water becomes unsafe and unusable due to mixing of urban wastes and effluents from the industries.

8. Why is mining a big source of pollution?


Ans: Mining causes pollution because large amount of slag is discarded for every tonne of metal extracted.


9. Write two points to be kept in mind while storing water in tanks.

Ans: Storage tank should not be located close to the source of contamination and should be accessible for cleaning.

10. Write any two alternatives to dams.

Ans: Adopting water harvesting techniques and reducing the scale of floods  through  better catchment management

11. Why do you think there should be equitable distribution of resources?

Ans: We think that there should be equitable distribution of resources because not only a handful of rich and powerful people, but all the people may get benefit from the development of these resources.

12. Which canal has brought greenery to considerable areas of Rajasthan?


Ans: Indira Gandhi Canal.


13. What were the two main problems as a result of Tawa Irrigation Project?


Ans: Water logging and increasing salinity


14. Write the advantages of giving the control of water management to the residents of the area?


Ans. Water harvesting techniques are highly locality specific and the benefits are localised. Thus, giving 
people the control over their local water resources ensures that mismanagement and over exploitation of 
these resources is reduced. 


15. State benefits of water harvesting.

Ans:  a. Provides self-sufficiency to water supply

b. Conserves valuable ground water        

c. Reduces cost for pumping ground water

d. Reduces local flooding and drainage problems

16. How did Chipko Andolan ultimately benefit the local population? Give any three benefits?


Ans:  a. The locals benefitted from forest produces  

b. The wild life and nature were conserved

c. The quality of air and soil was preserved

17. Quote three instances where human intervention saved the forests from destruction.


Ans:   
a. Contribution of Bishnoi movement  

b. Building national parks 
c. Encouraging wildlife sanctuaries

18. Why are environmentalists insisting upon sustainable natural resource management? give any four reasons.

Ans: 
a. Non-renewable resources are limited, we should use them judiciously

b. We should encourage the use of renewable resources

c. We should preserve the environment for future generation

d. The benefits of the controlled exploitation should go to local people

Do yourself :

1. What is considered as eco –religion? (1)

2. How did ’Chipko Andolan’ ultimately benefit the local population? (2)

3. What are ‘Biodiversity hot spots’? What is the measure of biodiversity in an area? How is it being affected? (2)

4. Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources? (2)

5. Why do we need to resort to water harvesting when we can collect rain water and use it?(2)

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