1
In the light of the above statements, choose the correct answer from the options given below
- (A) is false but (R) is true
- Both (A) and (R) are true and (R) is the correct explanation of (A)
- Both (A) and (R) are true but (R) is not the correct explanation of (A)
- (A) is true but (R) is false
Answer
(2) Both (A) and (R) are true and (R) is the correct explanation of (A)
Solution
As per NCERT, at high altitude (e.g. above 3,500 m at Rohtang Pass) the atmospheric pressure is low, so the body does not get enough oxygen.
⇒ This causes altitude sickness: nausea, fatigue and heart palpitations (with breathing difficulty).
∴ Assertion is true, Reason is true, and the low oxygen availability (Reason) is the cause of altitude sickness (Assertion).
Answer: (2)
NEET (UG) 2021