The correct answer is option (3) as nearly 20−25 precent of CO2 is transported by RBCs whereas 70 percent of it is carried as bicarbonate. About 7 percent of CO2 is carried in a dissolved state through plasma. The binding of CO2 with haemoglobin is related to the partial pressure of CO2.pO2 is a major factor which could affect this binding. When pCO2 is high and pO2 is low as in the tissues, more binding of CO2 occurs. Percentage of a gas transported depends upon its partial pressure. If partial pressure decreases, the transportation of gases also decrease with haemoglobin. So, Reason is the correct explanation of Assertion.
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: During the transportation of…
NEET UG 2024 — Zoology Breathing and Exchange of Gases
2024mcqmedium
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: During the transportation of gases, about 20−25 percent of CO2 is carried by Haemoglobin as carbamino-haemoglobin. Reason R: This binding is related to high pCO2 and low pO2 in tissues. In the light of the above statements, choose the correct answer from the options given below.
Official previous-year question
Held on 30 Apr 2024 · Verified 9 Jul 2026.
Options
- A
A is true but R is false.
- B
A is false but R is true.
- C
Both A and R are true and R is the correct explanation of A .
- D
Both A and R are true but R is NOT the correct explanation of A .
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