Question

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

Answer 1

The correct option is D (i)- lower lip; (ii)- hypopharynx

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).