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Breathing and Exchange of Gases question

2023 · Q77
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Breathing and Exchange of Gases question

2023 · Q77

NEETBiologyBreathing and Exchange of GasesMCQ+4 / −1

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

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
    (A) is true but (R) is false
  2. B
    (A) is false but (R) is true
  3. C
    Both (A) and (R) are true and (R) is the correct explanation of (A).
  4. D
    Both (A) and (R) are true but (R) is not the correct explanation of (A).
View written solutionFree

Correct answer: C

The correct option is :

Option C : Both (A) and (R) are true and (R) is the correct explanation of (A).

Explanation :

At higher altitudes, the air pressure is lower than at sea level. This means there is less atmospheric pressure to push oxygen into the lungs, which can make it more difficult for the body to get the oxygen it needs. This condition can lead to altitude sickness, which can cause symptoms such as difficulty breathing and heart palpitations, among others. This is the basis for the statement (A) and the reason given in statement (R) accurately explains this situation.

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