The main production method that plants use to create food is called photosynthesis. This process enables plants to convert light energy from the sun into chemical energy stored in glucose, which serves as food for the plant and ultimately supports other organisms in the food chain. Photosynthesis takes place primarily in the chloroplasts of plant cells, using water and carbon dioxide, while releasing oxygen as a byproduct. This process is vital for sustaining life on Earth and regulating atmospheric composition.