Why do glycogen and cellulose have different properties?

Glycogen is a highly branched polysaccharide that serves as an energy storage molecule in animals, while cellulose is a linear polysaccharide that provides structural support in plants. The difference in their properties arises from their distinct structures and functions in biological systems. Glycogen is easily broken down to release glucose for energy production, while cellulose is a tough and rigid molecule that provides strength to plant cell walls.