Question

Assertion[A]: A person sleeping under the tree during night time feels lethargic when he wakes up in the morning.

Reason[R]: He has inhaled excess oxygen given out by trees.

• A. A is true and R is false.
• B. R is true and A is false.
• C. Both A and R are true and R is the correct explanation for A.
• D. Both A and R are true but R is not the correct explanation for A.

Answer 1

The correct option is A A is true and R is false.

Plants usually perform respiration during the night as they do not have sunlight for photosynthesis and thus they give out a lot of carbon dioxide. A person sleeping under a tree during the night, therefore, inhales more carbon dioxide which deprives his body of oxygen. This leads to less energy production in his body, thus making him feel lethargic after he wakes up in the morning.