Which part of a plant is responsible for photosynthesis?

The leaves of a plant are primarily responsible for photosynthesis, which is the process of converting light energy from the sun into chemical energy in the form of glucose. This process occurs in the chloroplasts, specialized organelles found in the cells of the leaves. The chloroplasts contain chlorophyll, the green pigment that captures light energy, enabling the plant to convert carbon dioxide and water into glucose and oxygen when exposed to sunlight.

While roots, stems, and flowers have essential roles in the overall life of a plant, they do not significantly contribute to the process of photosynthesis. The roots primarily absorb water and nutrients from the soil, the stems provide structural support and transport water and nutrients between the roots and leaves, and flowers are involved in reproduction. Therefore, leaves stand out as the main site for photosynthesis, making them critical for a plant's energy production and growth.