984 A YEAR IN SCIENCE 



Questions 



1. Where does the ameba live? 



2. What is the structure of an ameba? 



3. Name the processes which are carried on by 

 the ameba. 



4. How does the ameba perform each of these 

 processes? 



5. Compare the paramoecium with an ameba. 

 Which is the more complex in structure? 



6. What are the advantages of division of labor 

 in an animal? 



7. Define and give examples of tissues, organs, 

 and systems. 



8. Why is it necessary for animals to digest the 

 food which they eat? 



9. In what part of the body does digestion take 

 place ? 



10. Why is it impossible for animals to live without 

 oxygen? 



11. What is the source of carbon dioxide in an 

 animal ? 



12. Compare the respiratory organs of the earth- 

 worm with those of man. 



13. From what source do fish obtain their oxygen 

 supply? What kind of breathing organs do they 

 have? 



14. What are the principal functions of the circula- 

 tory system ? 



15. Name three waste products formed in animals. 



16. Define excretion. 



17. What is the name of the tissue in animals which 

 is used to produce motion? 



