A cell wall is the non-living component that protects a cell's outermost layer.
A plant cell's cell wall is composed of cellulose, a glucose-based polysaccharide mesh.
The plant cell wall is generally arranged in three layers and composed of carbohydrates, such as pectin, cellulose, hemicellulose, and other smaller amounts of minerals, which form a network along with structural proteins to form the cell wall.
It offers tensile strength and defense against osmotic and mechanical stress.