Which of the following is correctly stated as happens in the common cockroach?

The food is grinded by mandibles and gizzard

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Malpighian tubules are excretory organ projecting out from the colon

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Oxygen is transported by haemoglobin blood

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Nitrogenous excretory product is urea

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Solution

The correct option is D The food is grinded by mandibles and gizzard
In cockroach, malpighian tubules project from the midgut, haemoglobin is not the respiratory pigment rather haemocyanin is the respiratory pigment which helps in exchange of gases and ammonia is the respiratory product of cockroach. Mandibles and gizzard are used for grinding of food. So, the correct answer is option A.

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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.

In which one of the following organisms, is its excretory organs correctly stated?

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