The role of cellulose in plant structure is fundamental, as it provides rigidity and strength to plant cell walls. Composed of linear chains of glucose units, cellulose serves as the primary structural component, allowing plants to maintain their shape and withstand various environmental stresses. This polysaccharide plays a crucial role in overall plant health and growth, enabling plants to transport nutrients efficiently. Additionally, cellulose is important for human nutrition as it contributes to dietary fiber in our diet.