Assertion :The presence of endothelium around the embryo sac and its cytological features suggest that it may be functionally similar to the anther tapetum. Reason: For this reason endothelium is also called integumentary tissue.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Endothelium is also called as integumentary tissue. It is because, during the formation of pollen in pollen sac, it acts similar to the tapetal cells. Tapetal cells provide nourishment to the pollen. Endothelial cells are present around the embryo sac. The arrangement of endothelium around the embryo sac differs according to different species.

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