Fact 1: Plants use cellulose for their cell walls.

Fact 2: Another important polysaccharide is cellulose.

Given the two facts above, answer the question "What do plants build their cell walls from?" with the following options: 
- By wind and rain
 - Deposition
 - Deposition.
 - algae
 - Chemical energy
 - plant wall
 - plant material
 - polysaccharides


 

        polysaccharides 