The body cavity in a cockroach is also known as ........

Gizzard (proventriculus) in cockroach lies between

Which one of the following is the true description about an animal concerned?

Explain the nervous system of the cockroach.

The color of the hemolymph found in a cockroach is .....

The figure given below shows the reproductive system of a female cockroach. The correct labellings indicated by alphabets $(A, B, C)$ are respectively: