Which one of the following statements regarding starch and cellulose is not correct?

1. The question asks which statement regarding starch and cellulose is incorrect. (A) Both are of plant origin. True. Starch is the main energy storage polysaccharide in plants, and cellulose is the main structural component of plant cell walls. (B) Both are polymers. True. Both are polysaccharides, meaning they are polymers made up of repeating monosaccharide units (glucose). (C) Both give colour with iodine. False. Starch (specifically amylose) gives a characteristic blue-black colour with iodine. Cellulose does not give this reaction. (D) Both are made up of glucose molecules. True. Both are polymers of glucose, but they differ in the type of glycosidic bonds linking the glucose units (alpha-linkages in starch, beta-linkages in cellulose). 2. The incorrect statement is (C).