Head of cockroach is called Hypognathous. Why ?

Head of cockroach is called hypoganthous. Why?

Head of cockroach lacks

Head of cockroach is hypognathous beccause

Head of cockroach is hypognathous beccause

Assertion: The head of cockroach is hypognathus. Reason: The proximal part of lower lip of cockroach is called pastmentum.

Assertion: The head of cockroach is hypognathus. Reason: The proximal part of lower lip of cockroach is called pastmentum.

Body cavity of cockroach is called