A. Assimilation of Carbon(IV)oxide
B. Photophosphorylation
C. Photolysis
D. Excitation of chlorophyll

Correct Answer:

Option A = Assimilation of Carbon(IV)oxide

Explanation

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.

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