Question

describe the main chemical changes which occur during photosynthesis in dark reaction

Answer 1

the dark reaction .ore appropriately called light independent phase as process does not happened during night but happens along with light reaction but this process does not require light).

#CO2 combines with RuBp(ribulose bisphosphate) to form PGA(Phospho Glyceric Acid)(temporary combination)

#then this PGA reacts with H released from NADPH to form glucose

Answer 2

Dark reactions make use of these organic energy molecules (ATP and NADPH). This reaction cycle is also called Calvin Benison Cycle, and it occurs in the stroma. ATP provides the energy while NADPH provides the electrons required to fix the CO2 (carbon dioxide) into carbohydrates.