Assertion :Leguminous plants are best preferred for rotation of crops. Reason: They have root nodules which possess nitrogen fixing bacterium Clostridium.

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 C Assertion is correct but Reason is incorrect
Crop rotation method involves growing of set of crops in a regular succession over a same piece of land in a specific period of time. Crop rotation maintains and improves soil fertility. This is achieved by raising leguminous crops. Leguminous crops provide shelter for soil bacteria like Rhizobium which is a nitrogen-fixing bacteria. The Rhizobia live in the nodules formed in the roots of the plants.
So, the correct answer is 'assertion is correct but the reason is incorrect'

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