Assertion :The thallus of Riccia is internally differentiated into an upper photosynthetic region and lower storage region. Reason: The lower storage region is formed from parenchymatous cells.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Riccia is a bryophyte with the thallus internally differentiated into an upper photosynthetic region and lower storage region. The upper region is made up of the photosynthetic filaments. While, the lower region is made up of thin walled non-green, starch containing parenchymatous cells which also lacks intercellular spaces. So, the correct option is A.

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