Not all plant cells contain chloroplasts. Chloroplasts are found in the cells of plants, algae, and some protists, but not in all cells. Chloroplasts are responsible for the process of photosynthesis, which is the conversion of light energy into chemical energy by capturing sunlight and using it to produce glucose (sugar) from carbon dioxide and water. This process is essential for the growth and survival of plants, as it provides them with the energy they need to carry out their metabolic processes. Cells that do not contain chloroplasts, such as root cells and some specialized cells, rely on the products of photosynthesis produced by other cells in the plant.
