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Describe labrum of a cockroach?

Dear student,

Iabrum:
This is a flaplike, sensory dorsal lip; There are gustatory areas on the ventral, or epipharyngeal, surface. The labrum is bounded by the clypeus, but hangs free below. The labrum functions to keep food in the preoral cavity and to protect the basal articulations of the mandibles.

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The labrum is often called an insect's upper lip . The labrum is flattened pieceof cuticle at the base of cockroach's "face" and above the mouthparts . The labrum partially or competely abscuresthe mandibles and helps hlod food in a position when the cockroah feeds . I hope, this answer will help you .
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