Which of the following is associated with the dark stage of photosynthesis?

A.

Assimilation of Carbon(IV)oxide

B.

Photophosphorylation

C.

Photolysis

D.

Excitation of chlorophyll

Correct answer is A

Dark stage, also known as biosynthetic or assimilatory, is the second stage in photosynthesis;

in this stage, a cluster of reactions; solar light is not needed and converts carbon dioxide – among other complexes  into sugars.

some enzymes are involved in carbon assimilation process depend on solar light.