AIIMS 2019 Zoology Insect Anatomy Assertion Reason Question

The assertion that cockroaches exhibit sexual dimorphisms is true, as males and females display distinct physical characteristics, such as size and reproductive structures. However, the reason provided is false; while female cockroaches do have anal styles, these structures are not the primary feature that defines sexual dimorphism in the species. Option A is incorrect because the reason does not correctly explain the assertion, while option B is incorrect as it implies the reason is a valid explanation. Option D is incorrect since the assertion is indeed true.