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Question

Molluscan blood contains

A
Haemoglobin
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B
Haemozoin
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C
Haemocyanin
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D
All of these
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Solution

The correct option is D Haemocyanin
Mollusca is coelomate. Hemocoel is the body cavity through which blood and coelomic fluid circulate. The blood contains a pigment known as haemocyanin. It helps to carry the oxygen throughout the body. They are suspended directly in the body fluid known as haemolymph. It appears blue. Oxygenation causes a color change between the colorless Cu(I) deoxygenated form and the blue Cu(II) oxygenated form.
So, the correct answer is option C.

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