7O Plants and their Ways in South Africa 



[Chloroplastids. 



(c) Plastids -! Leucoplastids. 



I Chromoplastids. 



(d) Cell sap 

 Cells may contain 



Water and food material. 



Air. 



Reserve food 



Non-nitrogenous f Starch, Sugar, Inulin, 



Carbohydrates - - -I and other less familiar 

 Fatty oils. ' carbohydrates 



Nitrogenous 

 Proteids. 

 Amides. 



Latex which may contain tannin, proteids, fats, and starch. 

 Excreted, waste or by-products (probably) 

 Mineral matter. 

 Ethereal oils and resins. 

 Tannin. 

 Enzymes. 



