ESSENTIALS OF ZOOLOGY 



CHAPTER I 



PROTOZOA 



Phylum PROTOZOA 



Class KHIZOPODA (Sarcodina) . 



INFUSORIA 



Sub-Class CILIATA 



SUCTORIA 



FLAGELLATA (Mastigophora) 

 HAEMOFLAGELLATA . 

 SPOROZOA 



Types 



Amoeba 

 Entamoeba 



Paramecium 

 Balantidium 

 Opalina 

 Vorticella 



Cercomonas 



Trypanosoma 



Coccidium 



Monocystis 



Plasmodium 



THE cell is the element of life. The tissues and the organs of 

 the higher animals consist of or are derived from cells, and 

 the Protozoa are one-celled animals or are simple colonies of 

 similar cells. We therefore resolve the animal kingdom into 

 the Protozoa, animals which are characterised by the cell being 

 usually the individual, and the Metazoa, animals which consist 

 of many cells more or less modified according to their position 

 in the animal and the function they have to perform. 



The same is true of plants. They occur in the one-celled 

 state or in simple association and are grouped as Protophyta 

 or Thallophyta, and, in a more complex, many-celled state, the 



