The part of the plant that conducts photosynthesis is primarily the leaves. Leaves contain chlorophyll, the green pigment that absorbs sunlight, allowing plants to convert light energy into chemical energy in the form of glucose. This process involves taking in carbon dioxide from the atmosphere and water from the soil. Photosynthesis is essential not only for the plant's growth and energy needs but also for generating oxygen, which is vital for most life forms on Earth. While leaves are the main site for photosynthesis, stems and other green parts of plants can also perform some photosynthetic functions.