Single Choice

Select the correct option: In the mouth parts of a cockroach, the labium forms _______ (i) while _____ (ii) acts as a tongue.

A(i)- upper lip; (ii)- maxilla
B(i)- upper lip; (ii)- hypopharynx
C(i)- lower lip; (ii)- maxilla
D(i)- lower lip; (ii)- hypopharynx
Correct Answer

Solution

The mouth parts of cockroach are of biting and chewing type consisting of labrum (upper lip), a pair of mandibles, a pair of maxillae and a labium (lower lip). Within the oral cavity enclosed by the mouthparts, lies a median flexible lobe called hypopharynx (tongue).

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