Question

Plants carry out photosynthesis only during the day and respiration only at night.

• A. True
• B. False

Answer 1

The correct option is B False

• Plants respire all the time, day and night. But photosynthesis (light-dependent reaction) occurs during the day when there is sunlight. Sunlight is essential for photosynthesis.
• During the day, both photosynthesis and respiration occur but during the night only respiration and dark reactions occur.
• Hence Plants carry out photosynthesis during the day and respiration only at night is False.

So, the correct answer is 'False'.