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PART - 2 - Unit V : CH - 14 Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPART - 2 - Unit V : CH - 14 Breathing and Exchange of Gases1 Mark
MCQ
In exhalation:
  • ✓
    The diaphragm and external diaphragmatic muscles are contracted
  • B
    The diaphragm and external diaphragmatic muscles are relaxed
  • C
    Only the diaphragm is contracted
  • D
    Only the external diaphragmatic muscles are relaxed
✓

Answer

Correct option: A.
The diaphragm and external diaphragmatic muscles are contracted
A

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