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

Complete the following statement :
$(a)$ In cockroach,grinding of food particles is performed by ........ .
$(b)$ Malpighian tubules help in the removal of ........ .
$(c)$ The hindgut of the cockroach is differentiated into ........ .
$(d)$ In the cockroach,blood vessels open into spaces called ........ .

Describe the reproductive system of a cockroach in detail.

Identify $X, Y$ and $Z$ in the given figure of the male reproductive system of a cockroach.

In the given figure,what do $A$ and $B$ represent respectively?

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