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 styles
(3) Presence of a boat shaped sternum on the 9th abdominal segment
(4) Presence of anal cerci

Answer 1

Answer:

anal style the 4th one

Explanation:

Answer 2

Option (b) is the right answer.

Presence of caudal styles is used to identify a male cockroach from a female cockroach

- There is a presence of thread like structures called as anal styles which is the significant feature of male cockroach and is absent in female cockroach

- Male cockroaches have much smaller body and antenna as compared to the female cockroaches.

- Anal cerci is found in both the male and female cockroaches and hence it can't be used to differentiate between them.