Final answer:
Polysaccharides like starch, cellulose, and glycogen are ideal storage products because of their insolubility, which prevents them from leaking out of cells or causing high osmotic pressure.
Step-by-step explanation:
Polysaccharides such as starch, cellulose, and glycogen are ideal storage products primarily due to their insolubility. These molecules are large polymers composed of glucose monomers and are highly efficient at storing energy. Starch is the stored form of sugars in plants and consists of a mixture of amylose and amylopectin. Glycogen is the storage form of energy in animals and is highly branched, being present in the liver and muscle cells. Cellulose, another glucose polymer, serves as a structural component in plant cell walls. The structure and insolubility of these polysaccharides prevent them from easily leaking out of cells or creating high osmotic pressure, which could be detrimental.