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AIIMS2019ZoologyStructural Organisation in Animals

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

Options

  1. AIt is of closed type.
  2. BIt is of open type.
  3. CHaemoglobin is present in RBC.
  4. DOxygen is not transported by blood.

Correct answer

A. It is of closed type.

Step-by-step solution

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. Only one type of blood corpuscles, leucocytes are present in the blood of earthworm.

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