Imkingofthehill Crossword
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
 
 
Down: 1) the pigment in rod cells that causes light sensitivity2) a space in the body3) tissue formed by the differentiation of cambium that causes a growth in width of a plant stem4) an underground stem Across: 4) outgrowths of a root's epidermal cells that allow for greater surface area for the absorption of nutrients and water5) a ring-shaped muscle that is capable of closing a tubular opening by constriction6) a cell in the retina that is sensitive to weak light7) fluid-filled structures in the inner ear that are associated with the sense of balance8) the external opening of the trachea in insects, opening into the respiratory system9) a kind of microorganism that is between a virus and a bacterium
 

 

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