$Periplaneta$ has no respiratory pigment in its blood because

Which secretion is responsible for the characteristic pungent odor in cockroaches?

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

The conglobate gland occurs in:

Ecdysone is produced by

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.