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Q.

Which of the following are present in male cockroach, but are absent in female?

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a

Collaterial glands

b

Caudal styles

c

Spermathecae 

d

Anal cerci 

answer is D.

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Detailed Solution

Caudal styles are the copulatory structures present only in the male cockroaches but are absent in females. 

Anal cerci are present in both males and females.

Collaterial glands and spermatheca are present in the female cockroach, but are absent in males.

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