Assertion :Due to fragmentation in Planaria, each part develops the remaining body parts and becomes a complete animal. Reason: Differentiated tissue present in each broken part of Planaria undergoes dedifferentiation and then differentiation in regeneration.

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 B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
When planaria get cut into pieces, each piece can regenerate into a complete organism. Cells at the point of the cut grow to form a blastema that will differentiate into new tissues and regenerate the missing parts of the piece of the cut planaria.
So, the correct option is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.

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