Question

The location and numbers of malpighian tubules in Periplaneta.
a. At the junction of midgut and hindgut, about 150.
b. At the junction of foregut and midgut, about 150.
c. Surrounding gizzard, eight.
d. At the junction of colon and rectum, eight.

Answer 1

hey!!
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The digestive system of cockroach consists of

an alimentary canal and

the associated glands.

The preoral cavity , surrounded by the mouth parts, is present in front of the mouth.The hypopharynx divides the mouth in into two chambers called

anterior – cibarum and

posterior – salivarium.

hope help u

Answer 2

hye!

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↪The system consists of branching tubules extending from the alimentary canal that absorbs solutes, water, and wastes from the surrounding hemolymph.

↪The wastes then are released from the organism in the form of solid nitrogenous compounds and calcium oxalate.