Question

In which stage of photosynthesis light is directly necessary?

• A. For electron excitation
• B. For reducing of CO${}_2$
• C. For regulating photosystem
• D. For cyclic photophosphorylation

Answer 1

The correct option is B For electron excitation
Direct light is necessary for the initial stage of photosynthesis. It helps in the excitation of the electron, which follows a cyclic and noncyclic pathway in cyclic photophosphorylation and non-cyclic photophosphorylation respectively.

So, the correct answer is option B.