Name the organelle of a plant cell where photosynthesis takes place.

Photosynthesis takes place in chloroplasts, the specialized organelles found in plant cells and some protists. These double-membrane-bound structures contain chlorophyll, the green pigment that captures light energy from the sun and converts it into chemical energy stored in glucose molecules. Chloroplasts are most abundant in the leaf cells of plants, particularly in the mesophyll tissue where maximum light exposure occurs.

Inside chloroplasts, photosynthesis occurs in two main regions: the thylakoid membranes, where light-dependent reactions capture solar energy, and the stroma (the fluid-filled space), where light-independent reactions (the Calvin cycle) use that energy to synthesize glucose from carbon dioxide and water. This remarkable organelle essentially functions as a solar-powered sugar factory, providing not only the plant's own energy needs but also producing the oxygen that most life on Earth depends upon. The presence of chloroplasts is what fundamentally distinguishes plant cells as autotrophic (self-feeding) organisms.