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STD 11 - 15. Body fluids and criculations — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 15. Body fluids and criculations1 Mark
MCQ
Heart beats are affected by
  • A
    Carbon dioxide
  • B
    Oxygen
  • C
    Vagus nerve
  • ✓
    All the above
✓

Answer

Correct option: D.
All the above
d
It’s obvious.

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