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Which of the following is correct for th...

Which of the following is correct for the common cockroach ?

A

The food is ground by mandibles and gizzard

B

Malpighian tubules are excretory organs projecting out from the colon

C

Oxygen is transported by haemoglobin in blood

D

Nitrogenous excretory product is urea

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The correct Answer is:
A
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