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Which of these structures act as the tongue of the cockroach?

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in Biology – Class 11 by (272k points)
Which of these structures act as the tongue of the cockroach?

(a) Labrum

(b) Maxilla

(c) Labium

(d) Hypopharynx

This question was posed to me during an online exam.

The doubt is from Animals Structural Organisations topic in chapter Structural Organisations in Animals of Biology – Class 11

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The correct choice is (d) Hypopharynx

For explanation: The hypopharynx acts as the tongue of the cockroach. It lies in a cavity surrounded by five mouth parts – a labrum, a labium, a pair of mandibles and a pair of maxillae. The head of the cockroach is a fusion of these mouth parts.

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