About Lesson
Plant cell wall
a. Middle lamellae:
- Consists of pectic acid in the form of Ca. and Mg. Salts.
- Hydrophilic in nature.
b. Primary wall:
- Consists of cellulose, lignin, hemicellulose, and some pectic substances and proteins.
c. Secondary wall:
- Consists of cellulose and lignin.
- Contain dead cells.