disaccharides

Sweet tasting
Soluble in water
Crystallisable
Maltose and lactose are reducing sugars while sucrose is non-reducing sugar
Sucrose is the form in which carbohydrate is transported in plants:
This is because it is soluble andjchernically stable
Sucrose is a storage carbohydrate in some plants e.g sugar-cane and sugar-beet
Disaccharides are hydrolysed to produce monosaccharide units which are readily metabolised by cell to provide energy