Which of the following happens in the common | vedclass

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(D) : In the common cockroach,the mouthparts include a pair of mandibles that bear teeth for cutting and masticating food.Additionally,the gizzard,whi

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The food is ground by mandibles and gizzard.

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(D) : In the common cockroach,the mouthparts include a pair of mandibles that bear teeth for cutting and masticating food.Additionally,the gizzard,which is a part of the alimentary canal,contains six muscular folds covered with chitinous teeth that further grind the food into smaller particles.Option $A$ is incorrect because Malpighian tubules arise at the junction of the midgut and hindgut,not the colon.Option $B$ is incorrect because cockroach blood (haemolymph) lacks haemoglobin and does not transport oxygen.Option $C$ is incorrect because the primary nitrogenous excretory product in cockroaches is uric acid,not urea.

Which of the following happens in the common cockroach?

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