In which one of the following groups, all the three are examples of polysaccharides?

Correct Answer - A
Starch and glycogen are storage polysaccharide and cellulose is a structural polysaccharide. Starch has straight chain of 1,4 `alpha`-D pyranose glucose units and side chains or amylopectin part of 2-200 thousand glucose units that are attached to straight chains by 1,6 `alpha`-D glycosidic bonds. Glycogen is long chain branched polymer of 5-300 thousand glucose units, straight chain linked by `alpha`-D 1-4 glycosidic bonds and side chains through `alpha`-D 1 `rarr` 6 glycosidic bonds. Cellulose, a fibrous polysaccharide has a linear chain of 6-10 thousand 1 `rarr` 4 linked `beta`-pyranose glucose chain.