Respiratory System: Regulation of Respiration Past Year (1998 - 2005) MCQs Breathing and Exchange of Gases Zoology NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

When CO₂ concentration in blood increases, breathing becomes:

1. There is no effect on breathing

2. Slow and deep

3. Faster and deeper

4. Shallower and slow

Subtopic: Respiratory System: Regulation of Respiration |

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