VERTEBRATES 275 



QUESTIONS 



1. What is the largest class of animals? 



2. What are the five classes of vertebrates? Give examples of 



each. 



3. How do mammals differ from all other animals? 



4. Name some of the classes of mammals, and give examples. 



5. Is a whale a fish? 



6. What methods of reproduction are there in the higher animals? 



7. In what respect does man excel the lower animals? 



8. How do different kinds of animals differ in the care of their 



young? 



