Oxygen carrying blood pigment of earthworm is

Haemocyanin

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Haemoglobin

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Haemoerythrin

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Chlorocruorin

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Solution

The correct option is B Haemoglobin
Oxygen-carrying blood pigment of an earthworm is haemoglobin which is dissolved in blood plasma. They have a closed circulatory system and thus, circulates blood through vessels. There are three main vessels that supply the blood to organs within the earthworm. Earthworms do not have lungs. They breathe through their skin. Oxygen and carbon dioxide pass through the earthworm's skin by diffusion. So, the correct answer is option B.

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