The main storage polysaccharide of plants is

Options

A. cellulose
B. starch
C. glycogen
D. inulin

Answer

B

Explanation

The polysaccharides are high polymers of the monomeric sugars and have molecular weights that may range from a few thousand to several millions. Starch occurs in all plants. Particularly in their seeds. It is the most important dietary source for human biengs. High content of starch is found in cereals, roots tubers and some vegetables. Plants store their reserve carbohydrates in the form of starch.
Glycogen is the reserve polysaccharide of animals whereas starch is the reserve for plants. Glycogen has a structure similar to amylopectin, except it has more cross-linking. The polysaccharide inulin. is hydrolysed by dilute acids to `D - (-) -` fructose. Thus, inulin is `(C_(6) H_(10) O_(5))_(n)`. and n has a value of about 30. It is a white powder, insoluble in cold water, and a gel on cooling. Inulin solution does not give any colour with iodine.