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

NCERT Intext Questions

Page Number 271

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

Ans.

  1. Segregate waste into recyclable and nonrecyclable parts.
  2. Switch off the lights, fans, television and other electrical appliances when not used.
  3. Use energy efficient electrical appliances.
  4. Walk for nearby shops instead of using vehicles.
  5. Reuse paper, plastic and glass bottles.
  6. Reuse water from washing machines for cleaning purposes.

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

Ans. The advantages of exploiting resources with short term aims are:

  1. It helps in boosting economic growth of country.
  2. It helps in fulfillment of immediate needs of human.
  3. More resources also lead to rapid industrialization.

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

Ans. The long term perspective in managing our resources will always be beneficial over short term perspectives. The long term perspective helps us in protecting our environment and also conserving our natural resources.

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

Ans. There should be equitable distribution of resources so that all, rich, and poor people get benefit from the development of these resources. Some forces work against the humanity like greed, corruption and lobby of the rich and powerful people which hinder distribution of all resources.

Page Number 275

1. Why should we conserve forest and wildlife?

Ans. We should conserve forest and wildlife because of the following reasons.

  • Conservation of forests:
  • 1. Forests prevent soil erosion and floods.
  • 2. Forests provide us O2 and are responsible for rainfall.
  • Conservation of Wildlife:
  • 1. Wildlife is important for food chain to function property.
  • 2. Wildlife should be conserved to prevent species from becoming extinct.

2. Suggest some approaches towards the conservation of forests.

Ans. Some methods for forest conservation are as follow:

  1. Except some trees, there should be ban on cutting of forest. Forests stop soil erosion, promotes rainfall and provide oxygen.
  2. Forests should be saved from fires. Many forests get destroyed due to wild forest fires.
  3. Forests should be saved from pests and insects. Pesticides, insecticides should be sprayed in forests.
  4. Overgrazing should be prohibited.
  5. National rules and laws should be strictly enforced.
Page Number 278

1. Find out about the traditional systems of water harvesting management in your region.

Ans. The traditional system of water harvesting in our region is the rooftop water harvesting using tanks. Tanks are kept at the roofs during rains the rain water is collected in these tanks and later can be used for the household purposes.

2. Compare the above systems with the probable systems in hilly/mountainous areas or plains or plateau regions.

Ans. In hilly regions, the system of canal irrigation called kulhs is used for water harvesting. This involves collection of rain water in a stream, which is diverted into man made channels down the hill sides.

In plains water harvesting structures are cresent shaped earthern embankments. These are low, straight and conrete.

3. Find out the source of water in your regions/locality. Is water from this source available to all people living in that area?

Ans. The sources of water in our region is ground water and tap water. The ground water is directly coming from the underground of earth through electric pumps whereas tap water is coming from various rivers (name of rivers of your cities), after being treated by the municipal corporation. Yes the source of water is available to all people living in our area.

NCERT Exercise Questions

1. What changes would you suggest in your home in order to be environment friendly?

Ans. We would suggest following changes in our home to make it environment friendly.

  1. Separation of garbage in biodegradable waste (food waste) and non-biodegradable waste.
  2. Avoiding waste of electricity by switching off the electrical appliances when not in use.
  3. Use of eco-friendly products such as paper bags and paper cups and avoid plastics.
  4. Avoiding the wastage of water by closing the tap after use.
  5. Avoiding waste of food by not taking food over your diet.

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

Ans. The following changes can be made in schools to make it environment friendly.

  1. Plant enough trees in the school.
  2. Leaking taps should be repaired so that water is not wasted and close the tap after use.
  3. Bring food in reusable boxes, not in plastic bags or in aluminium foil.
  4. Teachers can educate students about environmental conservation.
  5. There should be more windows in school for natural light.

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 forest produce ? Why do you think so?

Ans. The people living in and around the forests and the forest department of the Government could be given the authority to manage the forests because the forest department of the Government has sufficient power and resources that can manage the forest resources well. The people living in and around forests know about the forest products and use them only according to their needs. In addition to this, they would not damage the forests and use forests sustainably.

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?

  • Ans. (a) Forests and wildlife:
  • 1. We should stop cutting trees or deforestation.
  • 2. We should protect against the illegal trafficking and killing of wildlife.
  • (b) Water resources:
  • 1. We should promote rain water harvesting.
  • 2. We should avoid the discharge of sewage and industrial waste into river and other water resources.
  • (c) Coal and petroleum:
  • 1. We should stop using coal as fuel.
  • 2. We should promote electricity or gas based vehicles.

5. What can you as an individual do to reduce your consumption of the various natural resources?

Ans. We can do the following as an individual to reduce our consumption of the various natural resources.

  1. Follow the principle of three R’s i.e., Reduce, Recycle and Reuse.
  2. Reduce the use of plastic and replace it with paper bags.
  3. More trees must be planted in order to save our forest resources.
  4. Using public transport and bicycles to reduce fuel usage.
  5. The devices based on renewable sources of energy like solar cell, solar heater, etc. should be used.

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.
  • Ans. (a) To conserve our natural resources :
  • 1. Saved electricity by switching off the lights, fans, television and other electrical appliances when not needed.
  • 2. Used energy efficient electrical appliances. This is done by using compact fluorescent lamps (CFL) and fluorescent tube lights instead of traditional filament type electric bulbs.
  • 3. Used public transport for school instead of parent’s car.
  • 4. Took bath with less water than before and did not waste water.
  • 5. Took part in community awareness meetings regarding environmental conservation.
  • (b) To increase the pressure on natural resources :
  • 1. Used more paper than required for printing on my computer.
  • 2. Kept the fan on even when I was not in the room.
  • 3. Wasted food.
  • 4. Burnt crackers.
  • 5. Wasted petrol by unnecessarily starting the motorbike.

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

Ans. We would bring following changes in our lifestyle so that sustainable use of our natural resources can be encouraged.

  1. I will stop cutting trees and practice plantation of trees.
  2. I will use public vehicle and bicycle very often rather the private vehicle.
  3. I will start using paper bags instead of plastic bags for shopping.
  4. I will stop wastage of electricity, water and food.