Assertion :Ctenophorans are not kept in cnidarians. Reason: They have colloblast cells instead of nematocyst and have comb plates.

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.
Ctenophorans are not kept in cnidarians as unlike cnidarians, they have comb plates of fused cilia arranged along the sides of an animal. Also, they lack stinging cells nematocyst and instead they possess sticky cells, called colloblast in order to capture food. So, the correct answer is option A.

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