A: Starch stores energy, and glycogen provides structural support.
B: Starch is found in plants, and glycogen is found in animals.
C: Starch is composed of fructose, and glycogen is composed of glucose.
D: Starch is a monomer, and glycogen is a polymer.
Glycogen is produced by animals and is known as animal starch while starch is produced by plants. Glycogen has a branched structure while starch has both chain and branched components.