Assertion: In sucrose two sugar units are joined by 1, 2-glycosidic bond Reason: It joins C₁ of -glucose and C₂ of -fructose by glycosidic bond.

Sucrose on hydrolysis gives equimolar mixture of D- (+)-glucose and D-(–) fructose. These two monosaccharides are held together by a glycosidic linkage between C-1 of - glucose and C-2 of - fructose. Therefore, both, Assertion and Reason are true and Reason is the correct explanation of the given Assertion. Hence, option (a) is the correct. Biomolecules 30