Irrigation

Q1: Pick up the correct statement from the following:

A Gravity water is harmful to crops

B Hygroscopic water remains attached to soil molecules by chemical bond

C Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants

D All the above.

ANS:C - Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants

@Mohit and that chemical bond is called Adhesion is the same thing,

All the option seems correct because;

1) The Gravity water affects plants due to water clogging and air circulation.
2) Hygroscopic water remains in the soil and cannot be utilized by soil.
3) Capillary water is the water plants use for photosynthesis mostly.
So, the right Answer is D.



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