Why organelle do Chemical reactions of photosynthesis take place?

Chemical reactions of photosynthesis take place primarily in the chloroplasts, which are specialized organelles found in plant cells and some algae. Within the chloroplasts, chlorophyll captures sunlight and uses its energy to convert carbon dioxide and water into glucose and oxygen. This process occurs in two main stages: the light-dependent reactions in the thylakoid membranes and the light-independent reactions (Calvin cycle) in the stroma.