volume_mute
Choose the right word
publish date: 2026/06/15 09:06:4.839595 UTC
The cell wall surrounds the plasma membrane of plant cells and provides structural rigidity.
The plant cell wall is primarily made of (1).
Please drag and drop the selected option in the right place or type it instead
cellulose
pectin
lignin
chitin
Correct Answer
(1) cellulose
Explanation
The plant cell wall is primarily composed of cellulose, a complex polysaccharide that forms long fibers giving the wall its structural strength. The cell walls of adjacent cells are held together by a middle lamella made of pectin. In some cells, lignin is deposited for additional rigidity (e.g., wood).
Reference
Biology: A Self-Teaching Guide