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Morphology of Cockroach

Question

Mandibles of cockroaches are
Long and pointed
Short without teeth
Short with grinding teeth
Long and coiled

A

Short with grinding teeth

B

Short without teeth

C

Long and pointed

D

Long and coiled

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Solution

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Mandibles are the pair of appendages which is present in the buccal cavity. The cockroach mandible is well sclerotized (hardened), with the heaviest sclerotization occurring at the teeth. This helps in proper grinding of food.
Therefore, the correct answer is option A.

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