NEET UG 2021 · Zoology · Question 195
NEET 2021 Zoology, question 195
Question 195 of the NEET 2021 paper (code O1) is a Zoology question from Breathing and Exchange of Gases. Its idea, Effect of pO2 on Binding, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q195 · Zoology
Assertion (A) :
A person goes to high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart palpitations.
Reason (R) :
Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.
In the light of the above statements, choose the correct answer from the options given below.
- 1(A) is true but (R) is false
- 2(A) is false but (R) is true
- 3Both (A) and (R) are true and (R) is the correct explanation of (A)Official answer
- 4Both (A) and (R) are true but (R) is not the correct explanation of (A)
Official answer: option 3 · NTA final answer key
Same idea
The only question on Effect of pO2 on Binding
No other NEET paper from 2017–2026 tested this exact idea.
Effect of pO2 on Binding: every question and how it was framed
The chapter
Breathing and Exchange of Gases in ten years of NEET
17 questions from 2017–2026, asked in 9 of 10 papers, about 1.6 a paper. Oxygen Dissociation Curve alone had 6.