Assertion :Cockroach shows sexual dimorphism Reason: The female cockroach bears a pair of short thread like anal styles

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 C Assertion is correct but Reason is incorrect
In cockroach, males and females have slightly different morphology, hence showing sexual dimorphism. One of the distinguishing features is the presence of anal styles, (paired thread-like structure) only in males. Females lack anal styles.
So the correct option is C.

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