Which of the following is correct for the common cockroach?

Malpighian tubules are excretory organs projecting out from the colon.

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Oxygen is transported by haemoglobin in blood

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Nitrogenous excretory product is urea

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The food is ground by mandibles and gizzard

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Solution

The correct option is D
The food is ground by mandibles and gizzard

The two mandibles in the mouth part of cockroach bear teeth which cut and masticate the food into fine particles.

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Similar questions

Assertion [A] : Malpighian tubules are excretory organs projecting from the colon of the digestive system

Reason [R] : The nitrogenous excretory product is Uric acid.

Malpighian tubules are excretory organs in insects.

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