IQI2 



ZOOLOGY 



Monday 3.45-5.45 p. m. 



A teacher's certificate covering the laboratory instruction must be presented as part 

 of the examination. 



Answer any eight questions. No extra credit will be given for more than eight 

 questions. 



1. Explain what is meant by alternation of generations and describe the life- 



history of some animal that exemplifies this process. 



2. Name the classes of vertebrates and give three distinctive structural char- 



acteristics of each class. 



3. Give an account of the malarial parasite stating the method by which it 



enters the human body and that of the intermediate host. How can 

 malaria be controlled ? 



4. Describe the internal structure of a clam, illustrating your account with 



labeled diagrams, and explain the action of the parts labeled. 



5. Compare the methods of breathing of an insect, a mollusk, a fish, and a bird, 



and describe the structures involved in each animal. 



6. What changes occur in structure and function when a tadpole becomes a frog ? 



7. Discuss the life-history of two of the following animals: honey bee, mosquito, 



grasshopper, potato beetle. 



8. What reasons can you give for the preservation of song birds, the extermina- 



tion of house flies, and the support of fish hatcheries by the government ? 



9. Describe the general manner in which oxygen enters the body of a fish, 



circulates through it, and leaves it. 



10. Explain the meaning of the terms: evolution, natural selection, variation, 

 heredity, protective coloration, and illustrate each by an example from the 

 animal kingdom. 



