What does '$X$' represent in the given figure?

What is the similarity between the trachea of a cockroach and a rabbit?

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.

Which of the following statements is incorrect?

Match List-$I$ with List-$II$ regarding the organs of Cockroach:

List-$I$	List-$II$
$a$. Crop	$i$. Grinding the food particles
$b$. Proventriculus	$ii$. Secretion of digestive juice
$c$. Hepatic caecae	$iii$. Removal of nitrogenous waste
$d$. Malpighian tubules	$iv$. Storage of food

Choose the correct answer from the options given below:

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