Question

Fill in the correct number of mouth parts of a cockroach.

Mouth Part	Number
Labrum
Mandibles
Maxillae
Labium
Hypopharynx

• A. 1, 2, 1, 1, 2
• B. 2, 2, 2, 2, 1
• C. 1, 2, 2, 1, 1
• D. 1, 2, 2, 1, 2

Answer 1

The correct option is C 1, 2, 2, 1, 1

Mouth Part	Number
Labrum	1
Mandibles	2
Maxillae	2
Labium	1
Hypopharynx	1

The mouth parts of cockroach help in cutting, chewing and swallowing food. The mouth parts include:
1 labrum
2 mandibles
2 maxillae
1 labium
1 hypopharynx
The mouthparts of cockroaches are biting and chewing type as it takes solid food. Labrum is the upper lip and labium is the lower lip which has labial palps. Mandibles help in chewing food. Maxilla are provided with maxillary palps which tests the quality of the food. Tongue or hypopharynx lies within the cavity enclosed by mouth parts which helps in swallowing food. It is flexible.