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The teeth of the gizzard in cockroach is composed of ______

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in Biology – Class 11 by (272k points)
The teeth of the gizzard in cockroach is composed of ______

(a) calcium

(b) cellulose

(c) chitin

(d) cellobiose

I had been asked this question in an online interview.

My question is based upon Animals Structural Organisations in division Structural Organisations in Animals of Biology – Class 11

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The correct answer is (c) chitin

Best explanation: The teeth of the gizzard or proventriculus is made of chitin. The function of the gizzard in cockroach is to mechanically break down the ingested food by the process of grinding. The teeth help in grinding.

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