Q.

Haemocyanin is found in the blood of

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a

lac insect

b

earthworm

c

pearl oyster

d

starfish

answer is C.

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Detailed Solution

Most molluscs like pearl oyster have blue blood because their respiratory molecule is hemocyanin, a type-3 copper-binding protein that turns blue upon oxygen binding. Molluscan hemocyanins are huge cylindrical multimeric glycoproteins that are found freely dissolved in the hemolymph.

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Haemocyanin is found in the blood of