Previous Year Question
The plant cell wall is made up of which of the following?
A.
Sucrose
B.
Glucose
C.
Cellulose
D.
Fructose
Correct Answer: C
Detailed Solution
The cell wall of a plant cell is mainly composed of cellulose.
Cellulose is a polysaccharide made up of many glucose units. It provides rigidity, shape and structural support to the plant cell.
Important fact: The cell wall of higher plants contains not only cellulose but also substances such as hemicellulose and pectin. Therefore, the more precise statement is that the plant cell wall is mainly composed of cellulose.