Q. 685.0( 2 Votes )

The blood leaving the tissues becomes richer in :
A. carbon dioxide

B. water

C. haemoglobin

D. oxygen

Answer :

The blood leaving the tissues becomes richer in carbon dioxide. When the oxygenated blood passes through the capillaries of the tissue, it gives oxygen to the body cells and takes carbon dioxide, produced during respiration. Thus, it becomes richer in carbon dioxide.

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