NEET Zoology Mechanism of Breathing Assertion Reason Question
Assertion (A): The thoracic chamber is an airtight structure necessary for effective breathing.
Reason (R): The conducting part of the respiratory system is responsible for the actual diffusion of O₂ and CO₂ between blood and atmospheric air.
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.
A is false but R is true.
Correct Answer
Detailed Explanation
A is true as the thoracic chamber's airtight nature aids breathing mechanics. R is false because diffusion of gases occurs in the alveolar region, not the conducting part.
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