Question

Dark reaction of photosynthesis does not need light. Do plants undergo dark reaction at night explain

Answer 1

Plants can undergo dark reaction anytime. Light reaction can take place only when there is light. Light reaction is also known as preparation reaction because in this reaction only the plants get ready with all the components needed for the synthesis reaction or the so called dark reaction. If the plant has already gone through the light reaction then ultimately the plant can go undergo dark reaction either at day or night.

Answer 2

Dark reaction does not mean that it occurs in the absence of light i.e., at night. Infact, it is the reaction occurring simultaneously with light reaction. It a chemical process occurring independent of light. This reaction is completely based on enzymes.