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About 97 percent of oxygen in blood is carried by:
AWhite cells
BRed blood cells
CBlood plasma
DBlood platelets
Answer & Solution
Correct answer: B. Red blood cells
1. Only 3 percent dissolves in plasma.
2. The rest rides on haemoglobin.
3. Haemoglobin is inside red blood cells.
_Source: NCERT Class 11 Biology, Chapter 17, Breathing and Exchange of Gases._
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