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B
Haemoglobin
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C
Haemoerythrin
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D
Chlorocruorin
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E
Pinnaglobin
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Solution
The correct option is D Haemoglobin The blood of Pheretima is red coloured due to the presence of respiratory pigment haemoglobin (a red oxygen-carrying pigment). The haemoglobin is not contained in the corpuscles but it is found dissolved in the plasma and it is known to transport oxygen to the different part of the body in the earthworm.