518 



TAXONOMY 



The classification of man is another example. 



Phylum Chordata (most members have backbones and have 

 central nerve cords). 

 Class Mammalia (presence of hair ; the young are fed on 

 milk ; a muscular diaphragm separates the thorax from 

 the abdomen). 

 Order Primates (erect or nearly so). 

 Genus Homo. 

 Species sapiens. 



Classification of plants. 



The plant kingdom is divided 

 into four large groups called 

 phyla. The flowering group 

 of spermatophytes are the most 

 recent plants. 



I. Phylum THALLOPHYTA {thallus — young branch ; phyton 

 — plants). Includes very simple plants, sometimes single-celled, 

 but more often many-celled ; some have chlorophyll, others are 

 without this green material ; none have roots, stems, or leaves. 



There are two subphyla. Fungi and Algae. The Fungi are 

 non-green plants of very great economical importance. There 

 are four classes found in the subphylum fungi. 

 Class I — Fission fungi. Bacteria. 

 Class II — Tube fungi. Have tubular bodies. Example is 



bread mold. 



