Final answer:
The hydroxyl group on the alpha (a) position of the cyclic monosaccharide is located below the carbon number 1 in the sugar.
Step-by-step explanation:
The hydroxyl group on the alpha (a) position of the cyclic monosaccharide is located below the carbon number 1 in the sugar. This position is also known as the anomeric carbon. The alpha (a) form of the monosaccharide is represented by the OH group on the first carbon atom projected downward.