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Question

Oxygen is transported through blood mainly by:

A
Leucocytes
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B
Erythrocytes
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C
Thromobocytes
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D
Blood plasma
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Solution

The correct option is B Erythrocytes
  • Erythrocytes, also known as red blood cells (RBCs), function to transport Oxygen in the blood.
  • They do so with the help of Haemoglobin, a respiratory pigment.
  • The shape and structure of Erythrocytes are ideal for this function.
  • They lack a nucleus and few other organelles so that maximum space in the cell can be used to accommodate Haemoglobin molecules.
  • Leucocytes are involved in immune response while Thrombocytes are involved in blood clotting.
  • Blood plasma does not contribute to O2 transport.
  • Thus, option B is correct.

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