The correct answer is e) cellulose and starch.
Polysaccharides are long chains of monosaccharide units that are linked together by glycosidic bonds. They serve various functions, including energy storage and structural support in living organisms.
Cellulose and starch are both polysaccharides made up of glucose units. Cellulose provides structural support in plant cell walls, while starch is utilized by plants for energy storage.
Ribose and galactose, on the other hand, are monosaccharides. Ribose is a five-carbon sugar essential for the structure of RNA, and galactose is a component of lactose, found in milk. Therefore, they do not fall under the category of polysaccharides.