Q:
      
      
         
            
Plant cell walls consist mainly of
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) cellulose         
         
Explanation: Plant cell walls are mostly made up of the molecule cellulose. Cellulose is a polysaccharide, a complex sugar made of long chains of glucose.
 
The cell wall must be made of thick and strong material as it provides the structural shape of the plant and protection from insects and microorganisms.
       
      
      
      
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