Biology

Management of Natural Resources

Question:

(a) State the advantages of constructing dams across the rivers.
(b) Describe some of the problems associated with the construction of dams.

Answer:

(a) The advantages of constructing dams across the rivers are:

  1. Water from a dam is used for irrigation in fields through a network of canals.
  2.  Water from a dam is supplied to the people in towns and cities through pipelines after suitable treatment.
  3. The falling water from the dam is used for generating electricity.

(b) The problems associated with the construction of dams are:

  1. Social Problems:  Due to the constriction of high rise dams, a large number of human settlements are submerged in the water of large reservoir formed by the dam and many people are rendered homeless. This creates a social problem.
  2. Environmental Problems:  The construction of high rise dams on the rivers contributes to deforestation and loss of biodiversity. This is because of a vast variety of flora and fauna (plants and animals) get submerged in the water of large reservoir formed by the dam and disturb the ecological balance.
  3. Economic Problems:  Some people say that the construction of high rise dams involves the spending of huge amount of public money without the generation of proportionate benefits.
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Management of Natural Resources

Q 1.

Suggest any four changes that you would like to incorporate in the life style of students of your age to move towards a sustainable use of available resources. [All India Delhi 2008(C)]

Q 2.

List any four disadvantages of using fossil fuels for the production of energy. [All India]

Q 3.

List two advantages associated with water harvesting at the community level.

Q 4.

How would these advantages differ from the advantages of using a long-term perspective in managing our resources?

Q 5.

What is the main purpose of rainwater harvesting ?

Q 6.

(a) What is a natural resource ? Name three important natural resources.
(b) Why do we need to manage our natural resources ?

Q 7.

Although coal and petroleum are produced by the degradation of biomass, even then we need to conserve them. Why ?

Q 8.

Write the full names of (a) CFL, and (b) CFC.

Q 9.

List any two causes of our failure to sustain availability of underground water.[Foreign]

Q 10.

Name any four categories of people who depend on the forest resources, mentioning major needs of each category. [Foreign]

Q 11.

List four advantages of water stored in the ground. [Delhi]

Q 12.

Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment ?

Q 13.

State any four personal choices you would like to make to reduce energy consumption without affecting the quality of life or work explaining how each one of them would help you to do so. [Foreign]

Q 14.

What are the two kinds of natural resources? [Delhi(C)]

Q 15.

Name the major programme started to replenish forests.

Q 16.

Name two factors which can be used to find whether river water has been contaminated.

Q 17.

How do advantages of exploiting natural resources with short-term aims differ from the advantages of managing our resources with a long ¬term perspective? [Foreign]

Q 18.

Which of the two is a better option, (i) to collect rainwater in ponds or artificial lakes, or (ii) to let it recharge groundwater by water harvesting? List two advantages of the option to justify your answer. [Foreign]

Q 19.

With which process are the following ancient structures associated ?
Kulhs, Eris, Surangams, Kattas, Pynes

Q 20.

Fill in the following blanks with suitable words :Fill in the following blanks with suitable words :
(a) LPG is a ……………fuel but biogas is not a…………. fuel.
(b) Glaciers are a source of…………………..
(c) One of the main aim of management of forests and wildlife is to conserve the……………….which we haveinherited.
(d) Khadin is a traditional………………………..harvesting system in Rajasthan.
(e) When a fuel burns in an insufficient supply of air, then some poisonous gas called ……………………….. is also produced.

Q 21.

Write a short note on ‘Chipko Andolan’ (Hug the Trees Movement).

Q 22.

Although coal and petroleum are produced by degradation of biomass, yet we need to conserve them. Why?

Q 23.

What changes can you make in your habits to become more environment-friendly?

Q 24.

Suggest three ways to maintain a balance between environment and development to survive. [Delhi]

Q 25.

State an instance where human intervention saved the forests from destruction. [Delhi(Q)]

Q 26.

What is ‘Chipko Movement’? Why should we conserve forests? [All India]

Q 27.

Give two examples each of the following:

  1. Renewable sources of energy
  2. Non-renewable sources of energy. [All India]

Q 28.

Define:

  1. Biomass
  2. Anaerobic degradation [Foreign]

Q 29.

What is an equitable distribution of resources in a society and why is it necessary? State any two factors which work against an equitable distribution of resources. [Foreign]

Q 30.

Apart from the availability of forest products, name two other things which are affected by the destruction of forests.

Q 31.

Name the rivers with which the following dams are associated :
Name the rivers with which the following dams are associated :
(a) Tehri Dam
(b) Sardar Sarovar Dam
(c) Bhakra Dam

Q 32.

Name the person who is most remembered for the protection of Khejri trees in Rajasthan.

Q 33.

Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum

Q 34.

Why is the process of ‘reuse’ better than that of ‘recycling’ ?Why is the process of ‘reuse’ better than that of ‘recycling’ ?

Q 35.

Explain why, despite good rains, we are not able to meet the demand for water of all the people in our country.

Q 36.

Suggest a few measures for controlling carbon dioxide levels in the atmosphere.

Q 37.

(a) Locate and name the water reservoirs in figures (a) and (b).
(b) Which has an advantage over the other and why?
ncert-exemplar-problems-class-10-science-chapter-16-management-natural-resources-1
ncert-exemplar-problems-class-10-science-chapter-16-management-natural-resources-2

Q 38.

In the context of conservation of natural resources, explain the terms reduce, recycle and reuse. From among the materials that we use in daily life, identify two materials for each category.

Q 39.

Why should we conserve forests and wildlife?

Q 40.

List any two traditional systems of water harvesting. [Foreign]

Q 41.

State two reasons each of conserving (a) forest and (b) wildlife. [All India(Q)]

Q 42.

What is water harvesting? Mention any two water harvesting structures. [Delhi]

Q 43.

What is meant by sustainable management? The environmentalists are insisting upon “sustainable natural resource management”. State its four advantages. [All India (C)]

Q 44.

What are non-renewable resources of energy? Give two examples of such resources. [Delhi]

Q 45.

List three problems which arise due to construction of big dams. Suggest a solution for these problems. [All India]

Q 46.

List the products of combustion of fossil fuels. What are their adverse effects on the environment? [All India]

Q 47.

State the meaning of “sustainable management”. Reuse is better than recycling. How? [Foreign]

Q 48.

Why are forests considered “biodiversity hot spots”? List two ways in which an individual can effectively contribute to the management of forests and wildlife. [Foreign; All India 2010]

Q 49.

How did ‘Chipko Andolan’ ultimately benefit the local people? Describe briefly. [Foreign]

Q 50.

Name two fossil fuels.