Q11 of 20 Page 48

Is it a good practice to remove grass and small plants that are growing in an open, unused field? Give reason to support your answer.

In my opinion, it is not a good practice. Small plants and grasses cover the soil surface and their roots hold the soil particles together. These plants prevent soil erosion (removal of top soil) during strong winds and heavy rains. Thus, Small plants and grasses protect the top soil.


More from this chapter

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9

Which of the following situations – ‘A’ or ‘B’ – is advantageous for absorption of water and minerals? Why?

Situation ‘A’ : Growth and branching of roots in the C-horizon. Situation ‘B’ : Growth and branching of roots in A and B horizons.

 10

How can a farmer convert acidic soil to neutral soil?

 12

A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not dig beyond a depth of 5 feet. Provide a suitable scientific explanation.

 13

Locate the following zones given as boxed items in Figure 9.1 which shows a diagram of soil profile.

Top soil, Subsoil, C-horizon, Bedrock