Which of the following holds true for blood circulation in earthworm?

It is of closed type

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It is of open type

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Haemoglobin is present in RBC

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Oxygen is not transported by blood

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Solution

The correct option is A It is of closed type
Blood vascular system of earthworm is of closed type as blood flows in closed blood vessels. Oxygen carrying respiratory pigment, haemoglobin is present in the plasma due to which the colour of plasma is red.

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