CHAPTER II 

 THE PARTS OF A FLOWERING PLANT 



13. Fundamental Terms. — The plants with which we 

 are most familiar (flowering plants) are composed of 

 various parts, such as leaves, roots, tendrils; and each 



Fig. I. — A cactus plant {Rhipsalis pachyptera) with leafless stem. 

 The branches are flattened, thus exposing more green tissue to the light 

 in the absence of leaves. 



part has its special work to perform. The various parts 

 of a plant having their own special work are called organs, 

 and the special work of an organ is its function. Since 



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