The Calvin Cycle is a component of the light-independent reactions that occur in the stroma region of chloroplasts. It is responsible for the conversion of absorbed carbon dioxide into sugars.
The Calvin Cycle is an essential stage of photosynthesis, the process in which plants utilize energy collected from sunlight and chemically convert it into an energy source. It cannot occur without exposure to sunlight. When a plant is exposed to sunlight, special enzymes that begin the conversion process are activated, causing the carbon dioxide molecules to combine with sugar molecules. The combined molecules may then be converted into glucose and other carbohydrates. The plant stores these sugars throughout its structure to be used when necessary.