Question

Plants photosynthesize _____. only in the light but respire only in the dark only in the dark but respire only in the light only in the light but respire in light and dark and respire only in the light and respire only in the dark

Answer 1

Answer:

Plants photosynthesize only in the light but respire in light and dark.

Explanation:

The reactions of photosynthesis occur only during the day. This is because sunlight is used for converting water and  carbon dioxide into oxygen and glucose in the presence of sunlight. The light of the sun s the energy force which drives this reaction.

However, the reactions of respiration continue at day and night. The reactions of respiration do not require light energy from the sun.