Complete the following statement :

Question:
Complete the following statement :

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 ___________

Solution:

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