Question

Assertion (A): Blood plasma transports carbon dioxide in dissolved form, while oxygen is transported by respiratory pigments.

Reason (R): Carbon dioxide is more soluble in water than in oxygen.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

• Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).

• Assertion (A) is true, but Reason (R) is false.

• Assertion (A) is false, but Reason (R) is true.

Answer 1

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Explanation:

Carbon dioxide is significantly more soluble in water than oxygen, allowing a portion of it to be transported dissolved in plasma. Because oxygen has very low solubility, it requires respiratory pigments (haemoglobin) to be carried effectively through the blood.