<P> Glycogen is composed of a branched chain of glucose residues . It is stored in liver and muscles . </P> <Ul> <Li> It is an energy reserve for animals . </Li> <Li> It is the chief form of carbohydrate stored in animal body . </Li> <Li> It is insoluble in water . It turns brown - red when mixed with iodine . </Li> <Li> It also yields glucose on hydrolysis . </Li> </Ul> <Li> It is an energy reserve for animals . </Li> <Li> It is the chief form of carbohydrate stored in animal body . </Li>

What are the 3 most common polysaccharides and what is their role in different organisms