Final answer:
Monosaccharides are attached to one another via condensation reactions, forming a glycosidic bond.
Step-by-step explanation:
Monosaccharides are attached to one another via condensation reactions. This is because two monosaccharides can undergo a dehydration reaction, also known as a condensation reaction or dehydration synthesis, to form a disaccharide. During this process, the hydroxyl group of one monosaccharide combines with the hydrogen of another monosaccharide, releasing a molecule of water and forming a covalent bond. This covalent bond between two monosaccharides is called a glycosidic bond or glycosidic linkage.