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

Explain how excretion takes place in a cockroach.

Describe the female reproductive system of a cockroach.

Identify $X$ and $Y$ in the given diagram of the alimentary canal of a cockroach.

The gizzard of a cockroach is a part of which system?

Which of the following statement$(s)$ is/are correct regarding the excretory system of a cockroach?
$(i)$ Excretion is performed by Malpighian tubules.
$(ii)$ They absorb nitrogenous waste products and convert them into uric acid,which is excreted out through the hindgut.
$(iii)$ In addition,fat body,nephrocytes,and urecose glands also help in excretion.