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Question

Which structure is known as lower lip of cockroach?

A
Labrum
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B
Labium
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C
Mantum
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D
Submentum
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Solution

The correct option is B Labium
The labium is a single structure, although it is formed from two fused second maxillae. It is known as lower lip of cockroach and functioning in close the mouth of the insect. With the maxillae, it assists in breaking down of food during mastication.
Therefore, the correct answer is option B.

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