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Which of these structures is the upper lip of the cockroach?

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in Biology – Class 11 by (272k points)
Which of these structures is the upper lip of the cockroach?

(a) Maxilla

(b) Labium

(c) Labrum

(d) Mandible

The question was posed to me in a national level competition.

My doubt stems from Animals Structural Organisations topic in chapter Structural Organisations in Animals of Biology – Class 11

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Best answer
The correct answer is (c) Labrum

Best explanation: The labrum is the upper lip of the cockroach. The labium is the lower lip of the cockroach. The cockroach has six mouth parts – a labium, a labrum, a hypopharynx, a pair of mandibles and a pair of maxillae.

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