Answer:
Glucose is classified as the most common monosaccharide. Glucose is the simplest unit of carbohydrate which is made up of 6 carbon atom, 12 hydrogen atom, and 6 oxygen atom.
The most abundant monosaccharide present in the world is glucose. Plants make glucose by a process called photosynthesis. Glucose is the source of energy for most of the life forms present on the earth.
Polysaccharide units forms when many monosaccharide units joined together by glycosidic bond. Animals consume polysaccharide which is converted into glucose by the action of enzymes like amylase. Then this glucose is absorbed in blood to give energy to body tissues.