Mountain sickness is due to

MCQ

✓
${O_2}$ 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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Assertion: Families are characterised on the basis of both vegetative and reproductive features of plant species.
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