GENERAL HISTOLOGY

Detailed explanation-1: -Cell wall is a protective outer covering of the cell. It is mostly present in plant cells. It supports the contents of cell and protects from pathogen attack and wear and tear. It is made of cellulose, lignin.

Detailed explanation-2: -The outer covering of the cell, the cell wall is a rigid membrane that contains cellulose (a carbohydrate that is indigestible for humans). The cell wall protects the parts inside, and the cellulose molecules in the wall provide the support and rigidity needed to maintain the cell’s three-dimensional structure.

Detailed explanation-3: -Some cells, such as the conducting cells in xylem, possess a secondary wall containing lignin, which strengthens and waterproofs the wall. The middle lamella, a layer rich in pectins. This outermost layer forms the interface between adjacent plant cells and glues them together.