Answer:
(a) Gizzard It is a
muscular and greatly folded structure which marks the end of foregutand bears
six plates with teeth for crushing and grinding the food.
(b)Malpighian
tubules They help in the removal of nitrogenous wastes in arthropods, hence are
excretory in function.
(c)lleum,
colon and rectum and rectum opens and through anus.
(d)Haemocoel
It is the body cavity of cockroach divided into sinuses and contains
visceralorgans of cockroach floating in haemolymph.
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