what sugars are found in polysaccharides
5 Main Groups of Polysaccharides: 1. Starch. 1  Chemically, consists of long chains of glucose (a monosaccharide, see above) molecules. 2  Formed by plants during photosynthesis. 3  Present in many plant-based food sources, such as root vegetables. 4  e.g. potatoes, cereals e.g. and pulses.