^ 



1917 



ZOOLOGY 



Friday 2 p.m. Two hours 



Answer three questions from each group, and one additional question which may be 

 selected from any group. 



Group I 



1. Describe the structure of any protozoan you have studied, stating the 



function of each of its parts. 



2. (a) Name and locate the appendages of the crayfish or of the lobster and 



state the functions oijive dillcrent appendages named, or (b) Draw and 

 name the mouth parts of some insect. 



3. Describe the structure of the eye of some vertebrate and explain how the 



phenomenon of sight occurs. 



4. Compare the nervous system of man with that of some invertebrate. 



5. Compare the organs of excretion of three of the following: (a) an annelid, 



(6) an insect, (c) a crustacean or mollusk, (d) a fish or frog, (e) a bird or 

 mammal. 



Group II 



6. Describe the complete course of a molecule of oxygen from the external air 



to the brain of an animal. 



7. Give the characteristics that assign: 



(a) a beetle to its order; 



(b) a crayfish to its class; 



(c) an ameba to its branch or phylum; 



(d) a spider to its class; 



(e) a fly to its branch or phylum. 



8. Give the life history of an insect having complete metamorphosis. 



9. Explain the process of fertilization and the first divisions of the egg in some 



animal. 



10. Explain the process of digestion of food in a mixed diet. 



Group III 



11. Describe the economic importance of five of the following animals: mosquito, 



house fly, trichina, starfish, clam, earthworm, toad, cuckoo, weasel. 



12. Mention two external and two internal animal parasites of man or of 



domestic animals, giving for each the source from which infestation occurs. 



13. What steps are taken by the national, or your state government to protect 



and to increase the numbers of valuable fishes or birds ? 



14. (a) In what ways are the codUng moth and the English sparrow pests ? 

 (6) How may each be controlled ? 



15. (a) Give an outline of the life history of the malarial parasite. 



(b) State the agency by means of which infection occurs. 



(c) What are the methods of preventing malaria? 



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