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STD 12 - 11. organisms and populations — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 11. organisms and populations1 Mark
MCQ
Mountain sickness is due to
  • ✓
    ${O_2}$ is decreased progressively with the rise in altitude so fall in ${O_2}$ of the blood produces this symptom
  • B
    Stimulation of the nervous system at higher altitude
  • C
    Muscular fatigueness
  • D
    All of the above
✓

Answer

Correct option: A.
${O_2}$ is decreased progressively with the rise in altitude so fall in ${O_2}$ of the blood produces this symptom
a
It’s obvious.

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