STRUCTURE AND FUNCTION 49 



will permit. Any stagnant water may furnish several 

 kinds. By means of reference books, identify as many as 

 you can. In each case notice : — 



1. Its size, shape and general appearance, comparing 

 and contrasting it with paramecium. 



2. Its usual surroundings, i.e. the conditions it has to 

 meet. 



3. The means it has of finding out facts about its 

 surroundings. 



4. The means it has of adjusting itself to its surround- 

 ings. For example, is it stationary ? If so, what does it 

 do when conditions change .-' Is it locomotory .■' If so, 

 how effective is its locomotion.' 



5. What is its food .' How does it find food .' 



6. Can it do as many kinds of work as paramecium 

 can ? Can it do any that paramecium cannot do } If so, 

 what } 



Review and Library Questions on Protozoa 



1. What are the characteristics which distinguish pro- 

 tozoa from other animals 1 



2. What are the classes of protozoa } Characteristics of 

 each class ? 



3. What is digestion ? Where does it take place in the 

 protozoa .' 



4. What results from the fact that the amoeba has no 

 cell wall } (Give at least two points.) 



5. In what ways' are paramecia more specialized than 

 amoeba are } How does their greater specialization show 

 in their work ? 



6. What different methods of locomotion are shown 

 among protozoa.? By what means is locomotion accom- 

 plished in each case } 



