A plant cell wall is mainly composed of:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. cellulose.
The plant cell wall is primarily composed of cellulose, a complex carbohydrate made of glucose units. Cellulose provides structural strength and rigidity to the cell. In addition to cellulose, the wall also contains hemicellulose and pectin, which help in binding the cellulose fibers and maintaining wall flexibility. Lignin may also be present, especially in woody plants, to provide additional support and waterproofing. The cell wall plays a crucial role in protecting the cell, maintaining its shape, and regulating interactions with the environment. It is an essential component distinguishing plant cells from animal cells.