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.