Final answer:
Glycogen is the animal form of polysaccharides and serves as the storage form of energy in animals.
Step-by-step explanation:
A polysaccharide is a complex carbohydrate polymer formed from the linkage of many monosaccharide monomers. One of the animal forms of polysaccharides is glycogen. Glycogen is highly branched and serves as the storage form of energy (glucose) in animals, including humans. It is present in the liver and muscles.