NEET Biology question

Which of the following is correct for the common cockroach?

(A)Malpighian tubules are excretory organs
(B)Oxygen is transported by haemoglobin in blood
(C)Nitrogenous excretory product is urea
(D)The food is ground by mandibles and gizzardCorrect

Answer: (D)

Solution

In the cockroach, food is first bitten and chewed by the mandibles and then further ground by the muscular, cuticle-lined gizzard before passing on for digestion. Statement (B) is incorrect since the cockroach's open circulatory

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Question ID VK-111394