NCERT Solutions for Class 10 Science Chapter 16 Management of Natural Resources

 

Question 1.

What changes can you make in your habit to become more environment-friendly?
Answer.
To become more eco-friendly, I will suggested:

  1. All the bulbs and tube-lights should be replaced with LED (Light Emitting Diode).
  2. At home, everyone should use natural ventilation and light on day time.
  3. We should use cloth bags instead of plastic bags for shopping.
  4. We should avoid wastage of water. For example, waste water can be collected and use for mopping the floor. It can also be used for gardening purposes, etc.
  5. For cooking food we should use PNG instead of microwave or oven.

Question 2.
What would be the advantages of exploiting resources with short-term aims?
Answer.

  1. Present requirements of the population can be fulfilled.
  2. Industrial growth can be increased.

Question 3.
How would these advantages differ from the advantages of using a long-term perspective in managing our resources?
Answer.
Exploiting resources with short-term aim will only help in gaining profit for present generation while a long term perspective in managing resources will help in providing benefits for the generations to come.

Question 4.
Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
Answer.
There should be equitable distribution of resources so that every living organism gets benefits of these resources. In case of unequitable distribution of resources, people living close to the source receive more benefits than those living further.

Besides natural and topographical features, it is the lack of willingness on the part of the rich in command which work against an equitable distribution of our resources.

Question 5.
Why should we conserve forests and wildlife?
Answer.
We should conserve forests and wildlife because:

  1. they maintain ecological balance,
  2. they provide biological diversity, and
  3. they provide a number of valuable products like firewood, fruits, honey, ivory, medicines, dyes, resins, etc.

Question 6.
Suggest some approaches towards the conservation of forests.
Answer.

  1. Reclamation, i.e. to recover waste, desert, marshy or submerged land for developing forests.
  2. Selective use of forest resources.
  3. Protection from fuel-starved villagers and fodder-starved cattles.
  4. Deforestation: For all these approaches, it is of prime importance that human population be made aware of the imp¬lications of deforestation. People residing close to the forest areas need to be mobilised and encouraged to maintain the forest in their natural forms.

Question 7.
Find out about the traditional systems of water harvesting/management in your region.
Answer.
The main traditional systems, in different parts of India as per geographical situation are:

  • Khadins, tanks and rivers in Rajasthan.
  • Bandharas and tals in Maharashtra.
  • Bundhis in Madhya Pradesh and Uttar Pradesh.
  • Ahars and pynes in Bihar.
  • Kulhs in Himachal Pradesh.
  • Surangams in Kerala.
  • Kattas in Karnataka.
  • Ponds in the Kandi belt of Jammu region.
  • Eris in Tamil Nadu.

Question 8.
Compare the above system with the probable systems in hilly/mountains areas or plains or plateau regions.
Answer.
Hilly areas: Himachal Pradesh, a hilly area, has traditional system of irrigation called Kulhs. This consists of a headwall across a ravine to store and divert the flow of water through a canal to the field.

Plains: Jhalaras are found in Rajasthan and Gujarat They are human-made tanks. They are rectangular shaped with steps. They store sub-terranean seepage of a pond or a lake situated upstream.

Question 9.
Find out the source of water in your region/locality. Is water from this source available to all people living in that area?
Answer.
In our locality, water is supplied by government agencies through taps which is mainly come from the rivers or tubewells.
This water is not available to all the people living in that area.

Chapter End Questions

Question 1.
What changes would you suggest in your home in order to be environment-friendly?
Answer.
To become more eco-friendly, I will suggested:

  1. All the bulbs and tube-lights should be replaced with LED (Light Emitting Diode).
  2. At home, everyone should use natural ventilation and light on day time.
  3. We should use cloth bags instead of plastic bags for shopping.
  4. We should avoid wastage of water. For example, waste water can be collected and use for mopping the floor. It can also be used for gardening purposes, etc.
  5. For cooking food we should use PNG instead of microwave or oven.

Question 2.
Can you suggest some changes in your school which would make it environment-friendly?
Answer.

  1. The school should have separate dustbins for biodegradable and non-biodegradable wastes.
  2. A solar panel should be erected on the roof . to supplement energy demands.
  3. Proper rainwater harvesting system should be established at the roofs of classrooms.
  4. Big trees and hedges should be planted in the school campus.
  5. Urinals and toilets should be thoroughly cleaned and water should not be allowed to stagnate in drains.

Question 3.
We saw in this chapter that there are four main stakeholders when it comes to forests and wildlife. Which among these should have the authority to decide the management of forests produce? Why do you think so?
Answer.
The people who live in or around forests should have the authority to decide the management of forest produce. They have been living in the forests for centuries and know about the practices to use the resources in a sustainable manner.

Question 4.
How can you as an individual contribute or make a difference to the management of ’
(a) forests and wildlife,
(b) water resources and
(c) coal and petroleum?
Answer.
(a)

  1. By planting more trees.
  2. By making mass awareness about the importance of forests and wildlife towards ecological balance.
  3. By preventing the wastage of forest produce.

(b)

  1. Make judicious use of water.
  2. Persuade neighbours to install a rain-water harvesting system.
  3. Get leaking taps repaired immediately.
  4. Be conscious about municipal taps, i.e. close them if they are unnecessarily running.

(c)

  1. Try to use public transport for travelling, as this would reduce fuel con-sumption.
  2. Use solar cooker and solar heater.
  3. Make people aware of the importance of these resources.

Question 5.
What can you as an individual do to reduce your consumption of the various natural resources?
Answer.
To become more eco-friendly, I will suggested:

  1. All the bulbs and tube-lights should be replaced with LED (Light Emitting Diode).
  2. At home, everyone should use natural ventilation and light on day time.
  3. We should use cloth bags instead of plastic bags for shopping.
  4. We should avoid wastage of water. For example, waste water can be collected and use for mopping the floor. It can also be used for gardening purposes, etc.
  5. For cooking food we should use PNG instead of microwave or oven.

Question 6.
List five things you have done over the last one week to
(a) conserve our natural resources,
(b) increase the pressure on our natural resources.
Answer.
(a) To become more eco-friendly, I will suggested:

  1. All the bulbs and tube-lights should be replaced with LED (Light Emitting Diode).
  2. At home, everyone should use natural ventilation and light on day time.
  3. We should use cloth bags instead of plastic bags for shopping.
  4. We should avoid wastage of water. For example, waste water can be collected and use for mopping the floor. It can also be used for gardening purposes, etc.
  5. For cooking food we should use PNG instead of microwave or oven.

(b)

  1. On the switches of electrical appliances
  2. when I was not in the room.
  3. Open the water tap while brushing teeth.
  4. Wasted petrol by keeping the engine of bike on at red light.

Question 7.
On the basis of the issues raised in this chapter, what changes would you incorporate in your lifestyle in a move towards a sustainable use of our resources?
Answer.

  1. Compost the kitchen waste such as fruit and vegetable peels
  2. Do not use plastic bags
  3. Economic use water and electricity
  4. Dispose garbage by separating biodegradable and non-biodegradable materials
  5. Harvest rainwater
  6. Plant saplings
  7. Walk or use bicycle for short distances, and use public transport rather than personal transport
  8. Make more and better use of renewable sources of energy instead of fossil fuels.

NCERT Solutions