Respiratory Changes at High Altitude — NEET Biology
📚 Practice ConceptWhat happens to the respiratory process in a man going up a hill?
Assertion (A): The respiratory system can adjust breathing patterns based on blood chemistry. Reason (R): Increase in CO2 and H+ ions activates chemosensitive areas which signal respiratory adjustments.
View solution & NCERT explanation
Correct answer: A — If both assertion and reason are true and the reason is the correct explanation of the assertion.
NCERT confirms respiratory system adjusts to blood chemistry - Assertion is true. NCERT states “Increase in these substances can activate this centre, which in turn can signal the rhythm centre to make necessary adjustments in the respiratory process.” Reason explains the MECHANISM - chemical changes trigger neural responses that adjust breathing, providing the physiological basis for respiratory control.
What does NCERT say about What happens to respiratory?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.