LIFE SCIENCE

Detailed explanation-1: -The cell wall is composed of a network of cellulose microfibrils and cross-linking glycans embedded in a highly cross-linked matrix of pectin polysaccharides. In secondary cell walls, lignin may be deposited.

Detailed explanation-2: -The cell wall in plant cells is mainly composed of cellulose. It is a linear polymer of glucose which provides mechanical strength to plants.

Detailed explanation-3: -Cellulose is a major component of plant cell walls, and is the world’s most abundant biopolymer. Cellulose contains apparently simple linear chains of glucose residues, but these chains aggregate to form immensely strong microfibrils.

Detailed explanation-4: -The cell wall is mainly composed of cellulose.

Detailed explanation-5: -Secondary cell wall is formed by successive layers of cellulose and lignins. Lignin fills the space in the cell wall between cellulose, hemicellulose and pectin. It is present in vascular and supporting tissues such as xylem tracheids, vessel elements and sclereids cells.