Home › CBSE Class 11 (Science) › Biology › Breathing and Exchange of Gases › What role does oxygen play in regulating respira…
What role does oxygen play in regulating respiratory rhythm?
AA moderate role
BAn insignificant role
CThe main trigger
DA dominant role
Answer & Solution
Correct answer: B. An insignificant role
Breathing is driven chiefly by CO2 and H+; oxygen has little regulatory effect.
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