1. Tardigrade
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  3. Biology
  4. Assertion: A sigmoid curve is obtained when percentage saturation of haemoglobin with O2 is plotted against the PO2. Reason: Every 100 mL of oxygenated blood can deliver around 5mL of O2 to the tissues under normal physiological conditions.

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Q. Assertion : A sigmoid curve is obtained when percentage saturation of haemoglobin with $O_2$ is plotted against the $PO_2$.
Reason : Every $100 \,mL$ of oxygenated blood can deliver around $5mL$ of $O_2$ to the tissues under normal physiological conditions.

Breathing and Exchange of Gases

Solution:

Correct answer is (b) If both assertion and reason are true but reason is not the correct explanation of assertion