Question

Where does the dark reaction take place?

Answer 1

Dark reaction:

1. Dark reaction is the second phase of photosynthesis which takes place in the absence of light in the stroma of a chloroplast.
2. In this reaction, atmospheric carbon dioxide is absorbed and converted into a molecule of glucose by the ribulose bisphosphate carboxylase enzyme.
3. The carbon dioxide is fixed in Calvin-Benson cycle to glucose which is stored as starch in the plant cells.
4. The energy-stored molecules such as ATP and NADPH₂ are utilized to initiate the reactions.