Deforestation

Q.

Discuss the effects of deforestation on the following. (a) Wild animals (b) Environment (c)Villages( Rural areas) (d)Cities (Urban areas) (e) Earth (f) The next generation.

Q.

How are forests useful for us?

Q. Deforestation disturbs the balance between oxygen and carbon dioxide in the atmosphere.

1. True
2. False

Q.

Which of the following human activities is the leading cause of extinction worldwide?

1. Pollution

2. Poaching

3. Habitat loss

4. Illegal wildlife trade

Q.

What will happen if forests disappear? [5 MARKS]

Q.

Forests act as a natural absorber of rain water and prevents flooding.

1. True

2. False

Q.

Explain how forests prevent floods.

Q.

What are the causes of damage to the forest?

Q. Which of the following activities do not help to conserve forests?
1 - Afforestation
2 - Deforestation
3 - Reforestation
4 - Urbanisation
5 - Industrialisation

1. 1, 3 and 4
2. 2. 4 and 5
3. 1. 2 and 3
4. 2. 3 and 5

Q. Forests are a source of:

1. Wood
2. Medicinal plants
3. Plastics
4. Honey

Q.

Do we observe Tyndall effect when sunlight passes through the canopy of dense forest? Why?

Q.

Plant species are more vulnerable to extinction than animals because:

1. both A and B
2. none of these
3. plants cannot move around and so are more prone to extinction
4. humans depend on plants more than animals

Q. Which of the following statement are true about forests?

1. They control floods
2. They provide food and shelter to animals
3. They provide oxygen
4. They enhance greenhouse effect

Q. The process of land degradation by which a region becomes progressively drier is called ___.

1. Desertification
2. Deforestation
3. Greenhouse effect
4. Land pollution

Q. Climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere are all consequences of __________________

1. Flood
2. Deforestation
3. Tsunami
4. Climate change

Q.

Question 2
Explain how forests prevent floods.

Q. Which of the following are threatened by extinction?

1. Plants
2. Animals
3. Humans
4. No species are facing extinction

Q. People have started using Bamboo paper in place of standard wood pulp paper. What according to you could be consequence(s) of this move?

1. Afforestation
2. Improved forest cover
3. Global warming
4. Better climatic conditions

Q.

Which of the following activities does not lead to deforestation?

1. 
   Large-scale agriculture
2. 
   Laying road
3. 
   Construction of buildings
4. 
   Afforestation

Q.

Forests are a place hosting a number of plants and animals.

1. True
2. False

Q. Which amongst the following are true about forests?

1. Provide oxygen
2. Provide habitat to animals
3. Source of medicinal plants
4. Prevent water pollution

Q.

Is it true that the deforestation and over-grazing are reasons for soil erosion?

1. True

2. False

Q. The process in which forests are converted into pastures, then into arid land and finally into deserts is known as _________.

1. soil erosion
2. pasteurization
3. desertification
4. disinfection

Q. When an animal doesn't exist anymore because all of its species has died out completely. What does this refer to?

1. Extinction
2. Predation
3. Endangered
4. Proliferation

Q. Removal of top fertile layer of soil by wind or water is called as

1. Leaching
2. Erosion
3. Siltation
4. Weathering

Q. Clearance of forest for commercial as well as personal use is known as:

1. Sedimentation
2. Reforestation
3. Deforestation
4. Afforestation

Q. Select a correct statement regarding mining.

1. It causes soil erosion
2. It contaminates groundwater and surface water
3. All the above
4. It discards large amount of slag

Q. The image depicts which of the following activity?

1. Deforestation
2. Aforestation
3. Flood
4. Both A and B

Q. Explain how forests prevent floods.

Q. According to the given image, which of the following things are required for photosynthesis?

1. Sunlight
2. Oxygen
3. Carbon dioxide
4. Soil