54 ELEMENTARY ZOOLOGY. 



70. Special topics for themes in Zoology and English. 



1. Motion and locomotion in plants. 



2. Stationary animals and their manner of life. 



3 . Show that sunlight is really the source of the energy 

 shown by all organisms. 



4. Why do not plants have special digestive organs, 

 since animals have them? 



5. What are the results in an organism that come from 

 breaking down a complex unstable union of carbon, 

 hydrogen and oxygen (such as sugar) and forming more 

 stable and simple substances, such as CO 2 and H 2 O? 



6. Find formulas of some nutrient medium, such as 

 Pasteur's solution. What is organic and what inorganic 

 about it? Will it nourish yeast plants? Why? Will 

 it nourish animals? Why? 



7. What kinds of life probably appeared on the earth 

 first, plant or animal? The reasons for your conclusions? 



71. Define and derive the following terms: 

 Locomotion; chlorophyll; sensitiveness; nitrate; ni- 

 trite; proteid; fungi; saprophyte; parasite; cellulose. 



