NEET 2018 Biology question

Which of the following features is used to identify a male cockroach from a female cockroach?

(1)Forewings with darker tegmina
(2)Presence of caudal stylesCorrect
(3)Presence of a boat shaped sternum on the 9th abdominal segment
(4)Presence of anal cerci

Answer: (2)

Solution

In the male cockroach a pair of short, thread-like anal (caudal) styles arises from the 9th abdominal sternum; these are absent in the female. Anal cerci are

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Question ID VK-092343