Which of the following is an organ of mastication in the cockroach?
Labrum
Labium
Mandibles
Maxilla
A
Labrum
B
Maxilla
C
Labium
D
Mandibles
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Solution
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The labrum is the upper lip, while the labium is the lower lip.
Maxillae are used for cleaning and holding the food.
Mandibles are provided with teeth-like structures and are used to masticate the food, which helps in easy digestion.
Abductor and adductor muscles associated with the mandibles move these in a horizontal plane to cut and chew the food particles that are brought in between the mandibles by the first maxillae.
So, the correct answer is option C.
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