Figure shows, the effect of light on the rate of photosynthesis Based on the graph, answer the following questions.
a) At which points (A,B or C) in the curve is light a limiting factor?

b) What could be the limiting factor/s in region A?
c) What do C and D represent on the curve?

Explanation

a) A and B
b) Light could be a limiting factor.
c) C represent that rate of photosynthesis is not increased by increasing light intensity because some other factor may be limiting.
D) represets the intensity of light at which some other factor became limiting.