Assertion :Humus makes the soil fertile. Reason: Humus is rich in organic matter.

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
Humus is made up of partially decayed and partially synthesised organic materials. It is rich in nutrients and thus makes the soil fertile promoting plant growth. It makes the soil granular thereby increasing its air and water holding capacity. Being black, or blackish brown it absorbs heat and warms up the soil.

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