Answer the question

Question 11 Mark

Think about it:

Why is the vegetation sparse in deserts?

Answer

A desert is a barren area of land where a little precipitation occurs and consequently living conditions for plant and animal life are very hostile. It is an area where the soils are not fertile & hence vegetation is scanty.

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Question 21 Mark

Think about it:

Why do equatorial regions have fertile soils?

Answer

The sun rays are perpendicular in equatorial
regions so the climate is very hot and humid. This region also receives very heavy rainfall. As the process of soil formation is faster in these regions, equatorial regions have fertile soil. Also vegetal litter roots of plants, remains of animals, etc.; get decomposed adding to soil fertility.

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Question 31 Mark

Think about it:

Rohit and Prateeksha noted that their field had yielded a bumper crop. But they also noted that a part of their field had a stunted growth of plants. What investigation will you suggest to them?

Answer

I would suggest that they should check whether organic manures, are used evenly on all the parts of the field. Also, they should check whether that part of the field is getting adequate supply of water or not.

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Question 41 Mark

Give one word for the following:

The govt, scheme, work like construction of farm bunds, arresting waters of small streams, etc.

Answer

Jalayukt Shivar.

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Question 51 Mark

Give one word for the following: The excessive spraying of chemicals and use of chemical fertilizers.

Answer

Soil degradation

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