1 6 ANIMAL BIOLOGY 



matter leave the body at any particular place ? Trace 

 movement of the food particles. 



Draw the paramecium. 



Which has more permanent parts, the ameba or para- 

 mecium ? Name two anatomical similarities and three dif- 

 ferences ; four functional similarities and three differences. 



The ameba belongs in the class of protozoans called 

 Rhizopoda "root footed." 



Other classes of Protozoans are the Infusorians, which 

 have many waving cilia (Fig. 17) or one whip- like flagellum 

 (Fig. 1 8), and the Foraminifers which possess a calcareous 

 shell pierced with holes. Much chalky limestone has been 

 formed of their shells. These and the radiolarians, which 

 have flinty shells (Fig. 19), are often placed in the class 

 rhizopoda. To which class does the paramecium belong ? 



Protozoans furnish a large amount of food to the higher 

 animals. 



To the Teacher. If plant, animal, and human biology are to be 

 given in one year as planned, and full time allowed for practical work, 

 the portions of the text in small type, as Chapter III, may be omitted 

 or merely read and discussed. Any two of the three parts forming the 

 course may be used for a year's course by using all of the text and 

 spending more time on practical and field work. 



