Which of the following happens in the common cockroach? (A) Malpighian tubules are excretory org...
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Which of the following happens in the common cockroach?
(A) Malpighian tubules are excretory
organs projecting out from the colon
(B) Oxygen is transported by haemoglobin in blood
(C) Nitrogenous
excretory product is urea
(D) The food is ground by mandibles and gizzard.
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