Which of the following statement(s) is false, regarding Carbohydrates?
I. A polysaccharide is a branched or unbranched polymer of monosaccharides. II. Many polysaccharides are sweet and are micromolecules . III. Polysaccharides are insoluble in water and significant in storage and structural purposes. IV. Polysaccharides are formed by glycosidic linkages of the monosaccharide units.