Which of the following carbohydrates is the essential constituent of cell wall ?

A cell wall is a rigid, semi-permeable layer in some cell it act as protection. This outer covering is positioned next to the cell membrane in most plant cells, fungi, bacteria, algae. The cell wall is composed of a network of cellulose microfibrils and cross-linked matrix of pectin polysaccharides. Cellulose is made up of glucose units.