A) monosaccharides
B) disaccharides
C) trisaccharides
D) polysaccharides
Correct Answer: C
Solution :
Carbohydrates are known as saccharides and are formed of carbon, hydrogen and oxygen. They may be divided into four classes: [a] Monosaccharide: These cannot be hydrolysed into still smaller units, and composed of 3-7 carbon atoms, e.g., glucose, fructose, galactose, mannose [b] Disaccharides: These are formed by condensation reaction between two monosaccharides by forming glycosidic bond. e.g., maltose, lactose, sucrose. [c] Trisaccharides: These are composed of three monosaccharides. Raffinose is a common trisaccharide found in plant. On hydrolysis it yields one molecule each of glucose, fructose and glactose. [d] Polysaccharides: These are polymers of monosaccharides. These are water insoluble carbohydrates and are considered to be non-sugars e.g., starch, glycogen, cellulose, pectin, hemicellulose, inulin etc.
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