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Animal Kingdom

Question

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

Presence of a boat-shaped sternum on the 9th abdominal segment

Presence of caudal styles

Presence of anal cerci

Forewings with darker tegmina

Solution

B.

Presence of caudal styles

Males bear a pair of short, thread-like anal styles which are absent in females.

Anal/caudal styles arise from 9th abdominal segment in the male cockroach.

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