Animal Kingdom Question 506

Question: Male and female Cockroaches can be distinguished externally through [CBSE PMT 1991; Pb. PMT 1994, 97; RPMT 1995, 98; CPMT 1996, 98]

Options:

A) Anal styles in male

B) Anal cerci in female

C) Anal style and antennae in females

D) Both (a) and (c)

Show Answer

Answer:

Correct Answer: A

Solution:

Cockroach is unisexual and exhibit sexual dimorphism.

In male?s ninth segment bears a pair of anal styles ventrally.