What type of carbohydrates combine to form starches?

Starches are formed from the polymerization of glucose molecules, which are a type of simple carbohydrate (monosaccharide). Specifically, the glucose units are linked together through glycosidic bonds, primarily in the form of amylose and amylopectin, which are the two main components of starch. These complex carbohydrates serve as a storage form of energy in plants.