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Class 11BiologyBreathing and Exchange of GasesMechanism of Breathing
Medium

Inspiration occurs when intra-pulmonary pressure is

  • A
    Higher than atmospheric pressure
  • B
    Lower than atmospheric pressure
  • C
    Equal to atmospheric pressure
  • D
    Zero compared to atmospheric pressure
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Class 11 Questions

Class 11

Biology Questions

Chapter

Breathing and Exchange of Gases

Subtopic

Mechanism of Breathing

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