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Question

The haemolymph of a cockroach is

A
Yellow.
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B
Red.
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C
Green.
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D
Colourless.
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Solution

The correct option is D Colourless.
The cockroach blood is called as hemolymph. Cockroach blood is not red because they do not use hemoglobin to carry oxygen. In fact, their bloodstream is not used to carry oxygen either. They use a system of pipes called tracheae to bring the oxygen and remove carbon dioxide from their tissues. So, the correct answer is option D.

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