Assertion :Rhoeo leaves contain anthocyanin pigments in epidermal cells. Reason: Anthocyanins are accessory photosynthetic pigments.

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 C Assertion is correct but Reason is incorrect.
Rhoeo leaves appear purple due to the presence of anthocyanin pigments in its epidermal cells. Hence, the assertion is correct. Anthocyanin is not an accessory photosynthetic pigment. The accessory pigment of plants is chlorophyll and carotenoids. Anthocyanin belongs to the group of flavonoid pigments. They are able to change colour with a change in pH. In the presence of hypertonic solution, the vacuole will lose water and concentrate the pigment in a smaller space making it look darker.
Thus, option C is correct.

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Q. Assertion :Rhoeo leaves contain anthocyanin pigments in epidermal cells Reason: Anthocyanins are accessory photosynthetic pigments

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(a) Both assertion and reason are correct and the reason is correct explanation of assertion
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(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
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