Glucose is important to plants because it is a source of energy that can be converted into other components like starch or cellulose; these components are necessary for cell structures such as the cell walls and for the plant's development. Glucose is also necessary for respiration in plants.
Glucose, which is a monosaccharide, is a carbohydrate produced through the photosynthesis process in plant leaves that contain the chloroplasts. The glucose that plants do not use immediately is converted into larger molecules of glucose and stored as starch for later use as an energy source. Similarly, starch can be converted into cellulose, which is a major component of the cell wall in plants. Plants require the nitrates found in the soil to produce another important nutrient called protein.