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Which of these structures is the upper lip of the cockroach?(a) Maxilla(b) Labium(c) Labrum(d) MandibleThe 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

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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