They are both plants, also reproduction, and pollen, i think
        
                    
             
        
        
        
The three-dimensional compositions have more silicon in comparison to those composed of independent tetrahedra.  
The silicate minerals refer to the most general of Earth's minerals and involve feldspar, quartz, mica, pyroxene, amphibole, and olivine. On the other hand, the silica tetrahedra composed of oxygen and silicon, produce sheets, chains, and frameworks, and bonds with other cations to produce silicate minerals.  
 
        
                    
             
        
        
        
Feel free to ask if you still don't understand
 
        
        
        
1,bc the prefix auto=self, like in the word autobiography, where this can be translated into self-biography, or self-writing