Practice & Test Breathing and Exchange of Gases
Class 11 Biology · Chapter 14. Practice 35 free NEET 2027 questions on Breathing and Exchange of Gases (Class 11 Biology), across 11 concepts. Asked ~2.9× per paper since 2013.
How much does Breathing and Exchange of Gases matter?
Across the 13 NEET papers from 2013 to 2025, Breathing and Exchange of Gases has been examined 38 times — an average of 2.9 questions per paper. At 4 marks each, that is roughly 12 marks a year riding on this one chapter.
What gets asked: 11 concepts
Every question in the bank is tagged to one of these, so practice can target the exact idea you keep missing.
Sample questions
The O₂–hemoglobin dissociation curve (dashed) is shifted to the right of normal. This right shift occurs when:
Match the following respiratory volumes with their descriptions: Column I (Volume) Column II (Description) (A) Tidal Volume (TV) (1) Volume of air remaining in the lungs after a forced expiration (B) Inspiratory Reserve Volume (IRV) (2) Volume of air inspired or expired during a normal respiration (C) Expiratory Reserve Volume (ERV) (3) Additional volume of air a person can inspire by a forceful inspiration (D) Residual Volume (RV) (4) Additional volume of air a person can expire by a forceful expiration Choose the correct option:
Consider the following statements regarding the regulation of breathing: Statement I: The pneumotaxic center, located in the pons, can reduce the duration of inspiration and thereby alter the respiratory rate. Statement II: Chemoreceptors located in the aortic arch and carotid artery are sensitive to changes in $\text{pO}_2$, $\text{pCO}_2$, and $\text{H}^+$ concentration. Choose the correct option:
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Practice adapts as you go — get one wrong and the next question targets the same concept instead of moving on. Or sit a timed test to see where you actually stand.
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