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Q.

Assertion: Upper epidermis of dorsiventral leaf is different from lower epidermis.Reason: Upper epidermis of bifacial leaf has less or no guard cells and lower epidermis has more guard cells.

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a

Both assertion and reason are correct and reason correctly explains the assertion.

b

Both assertion and reason are correct and reason does not correctly explain the assertion.

c

Assertion is correct and reason is incorrect.

d

Assertion is incorrect and reason is correct.

answer is A.

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Detailed Solution

Upper epidermis of dorsiventral or bifacial leaf is different from lower epidermis in either having few stomata or no stomata. Lower epidermis has more number of stomata. Hence more guard cells are present in the lower epidermis and few or no in upper epidermis.
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