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

Mouth Part Number

Labrum

Mandibles

Maxillae

Labium

Hypopharynx

1, 2, 1, 1, 2

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2, 2, 2, 2, 1

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1, 2, 2, 1, 1

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1, 2, 2, 1, 2

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Solution

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.

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