If you mean plants, then it is called the cell wall.
The stiff outer covering that protects plant cells is called the cell wall. It provides structural support and protection to the cell, helping maintain its shape and prevent it from bursting.
The outer covering of an animal cell is the cell membrane. The outer covering of plant cells is the cell wall, which is much stronger and stiff.
Wombats have a covering of stiff, coarse hair.
A stiff outer covering is often referred to as an exoskeleton, which is a rigid external covering found in some animal species, such as insects and crustaceans. This protective structure provides support, protection, and attachment points for muscles.
The stiff outer covering that protects and supports green plant cells is called the cell wall. Composed primarily of cellulose, the cell wall provides structural integrity, helps maintain cell shape, and offers protection against mechanical stress and pathogens. This feature distinguishes plant cells from animal cells, which lack a cell wall.
The cell membrane is the outer covering of a cell, protects it and maintains the shape of the cell.
cell membrane
cell membrane
the cell membrane
cell membrane
Cell wall or cell membrane
Outer covering .