(a) Explain the events which take place during photosynthesis.

(b) Which test is done to prove presence of starch in leaves?

Asked by Topperlearning User | 24th Jul, 2017, 04:24: PM

Expert Answer:

(a)Photosynthesis takes place in the following three steps:

(i) Absorption of sunlight energy by chlorophyll.

(ii) Conversion of light energy into chemical energy, and splitting of water into hydrogen and oxygen using light energy. 

(iii) Reduction of carbon dioxide by hydrogen to form carbohydrate like glucose by utilizing the chemical energy.

(b) Iodine test is done to prove the presence of starch in leaves. The starch present in leaves give blue-black colour with iodine solution.

Answered by  | 24th Jul, 2017, 06:24: PM