It is advised not to sleep under a tree at night because trees—
- ARelease a lesser amount of oxygen
- BRelease harmful gases at night
- CRelease carbon dioxide
- DRelease carbon monoxide
- ENone of the above/more than one of the above
Show answer and explanation
Correct answer: (c) Release carbon dioxide
Explanation
During the day, in sunlight, plants absorb carbon dioxide and release oxygen through photosynthesis. At night photosynthesis stops and plants only respire: they absorb oxygen and release carbon dioxide. Thus, at night the amount of carbon dioxide increases under trees and a feeling of suffocation is felt; therefore, one should not sleep under a tree at night.