Question

What will happen to the rate of photosynthesis on a plant under the following circumstances?

(i) cloudy day in morning but bright sunshine in the afternoon

(ii) no rainfall in the area for a considerable time.

(iii) gathering of dust on the leaves

Answer 1

The rate of photosynthesis will:

(i) first decrease as there will be less sunlight and then increase during the afternoon

(ii) decrease due to less availability of water

(iii) decrease due to the closed stomatal pores