a. In cockroach grinding of food particle is performed by ____________

b. Malpighian tubules help in removal of ___________________________

c. Hind gut of cockroach is differentiated into ______________________

d. In cockroach blood vessels open into spaces called ___________

A.In cockroach grinding of food particle is performed by gizzard.

Expaination –

Gizzard is the part of a stomach in which food is changed into smaller pieces before it can be digested.

B.Malpighian tubules help in removal of Nitrogenous excretory products.

Explaination-

Malpighian tubules perform the main function for the regulation and control of haemolymph composition and volume

C.The hindgut of cockroach is differentiated into ileum, colon and rectum.

Explanation-

ileum-the final and longest segment of the small intestine.

Colon-its main function is Absorption of water and ions occur through rectum.

Rectum- An important function of the rectum in terrestrial insects is the removal of water from the faeces

D.In cockroach blood vessels open into spaces called Haemocoel.

Explaination-

haemocoel is the main body cavity of invertebrates