Q143 / 160 · JIPMER 2006 · Zoology

On high mountains, difficulty in breathing is due to :

  • Correct answer
    A
    decrease in partial pressure of $\mathrm{O}_2$
  • B
    decrease in amount of $\mathrm{O}_2$
  • C
    increase in $\mathrm{CO}_2$ concentration
  • D
    all of the above

Solution

On high mountains, difficulty in breathing is due to decrease in partial pressure.

Hence, the correct answer is option: 'A'.

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