During photosynthesis, plants take in water and carbon dioxide and absorb light energy. Plants use the light energy captured by chlorophyll to help form glucose molecules. Glucose molecules store energy.To use this energy,a plant cell needs its mitochondria to break down the glucose.This process of breaking down food molecules to get energy is called cellular respiration.During cellular respiration,cells use oxygen to break down food molecules.Like all cells, plant cells then use the energy from food to do work
