Which structure is known as lower lip of cockroach?
Labrum
Labium
Mantum
Submentum
A
Labrum
B
Labium
C
Submentum
D
Mantum
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Solution
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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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