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Question

Which of the following is an organ of mastication in the cockroach?
  1. Labrum
  2. Labium
  3. Mandibles
  4. Maxilla

A
Labrum
B
Maxilla
C
Labium
D
Mandibles
Solution
Verified by Toppr

  • 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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