Assertion :Photosynthesizing cells serve as sources of the assimilates. Reason: Photosynthates are translocated from source.

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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Assertion is incorrect but Reason is correct.

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
All plant cells do not carry out photosynthesis. Only green leaf cells carry out photosynthesis. Photosynthesizing cells serve as a source of assimilates or sugars. Photosynthates are translocated from source to sink through phloem (sieve tubes).
So, the correct answer is option B.

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