Assertion :Plant roots use capillary water. Reason: Capillary water is not affected by gravitational force.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Plants take up water via capillary action. Capillary water is held in the soil against the gravitational pull as the surface tension forces like cohesion and adhesion of the soil micropores are higher than the gravitational pull. However, on a loss of water from the soil, then gravitational pull overcomes that of the surface tension properties.

So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.

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