Figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:

(a) At which point/s (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?

Asked by Pragya Singh | 11 months ago |  136

1 Answer

Solution :-

Light intensity and photosynthesis rate graph

(a) In the given graph, light serves as a limiting factor where photosynthesis occurs to the lowest degree. As a result, light is limiting at point A.

(b) Light can limit the growth of plants; water, temperature, and carbon dioxide concentration are also factors.

(c) At stage C, light is no longer a limiting variable. Photosynthesis has already reached its highest rate at point D when light intensity no longer affects photosynthesis.

Answered by Abhisek | 11 months ago

Related Questions

Give a comparison between the following:

(a) C3 and C4 pathways

(b) Cyclic and non-cyclic photophosphorylation

(c) Anatomy of leaf in C3 and C4 plants

Class 11 Biology Photosynthesis in Higher Plants View Answer

Look at leaves of the same plant on the shady side and compare it with the leaves on the sunny side. Or, compare the potted plants kept in the sunlight with those in the shade. Which of them has leaves that are darker green? Why?

Class 11 Biology Photosynthesis in Higher Plants View Answer

Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?

Class 11 Biology Photosynthesis in Higher Plants View Answer

Suppose there were plants that had a high concentration of Chlorophyll b, but lacked chlorophyll a, would it carry out photosynthesis? Then why do plants have chlorophyll b and other accessory pigments?

Class 11 Biology Photosynthesis in Higher Plants View Answer

RuBisCo is an enzyme that acts both as a carboxylase and oxygenase. Why do you think RuBisCo carries out more carboxylation in C4 plants?

Class 11 Biology Photosynthesis in Higher Plants View Answer