Which one is polymer?

Step-by-step solution

Glycogen is the main storage polysaccharide in animals. Hence, it is commonly called 'animal starch'. Blue-green algae and fungi also store glycogen as 'fuel reserve'. Like those of amylopectin, glycogen molecules are also large and highly branched (branch points are α 1-6 linkages) polymers of thousands of D-glucose residues linked by α 1-4 glycosidic bonds. In comparison to amylopectin molecules, however, glycogen molecules are much larger, more extensively branched, and more compactly coiled concentrically.