What will happen to the rate of photosynthesis in 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

(i) The rate of photosynthesis decreases in cloudy day in morning but increases in bright sunshine in the afternoon.

(ii) The rate of photosynthesis decreases in the area where there is no rainfall for a considerable time.


(iii) The rate of photosynthesis decreases when dust gathers on the leaves.


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