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1919 

 BIOLOGY 



Friday, June 20 2 p.m. Two hours 



Answer two questions from each group and four additional questions which may be 

 selected from any of the groups. Number each answer to correspond with the question 

 selected. 



Group I 



1. Make a labeled drawing of a typical plant cell. 



2. Name a flower and an insect mutually adapted for insect pollination. 



Describe the structural adaptations in both flower and insect. 



3. Name and locate the parts of a tooth shown in a drawing of a vertical 



section. 



4. Describe the structure of some protozoan that you have studied. Explain 



how this organism moves, how it secures its food, and how it withstands 

 adverse conditions. 



5. (a) Describe the structure of your hand. 



(b) Name all the tissues of which it is composed. 



(c) What function does each tissue perform ? 



(d) In what ways is the hand adapted for its work ? 



Group II 



6. Explain the complete path, or cycle, by which a molecule of free nitrogen 



from the air may be incorporated into the living tissue of a man and may 

 again reach the atmosphere. 



7. Name five vital functions of a fish and briefly describe the mechanism by 



means of which each of these functions is accomplished. 



8. Describe the development of the frog or toad from the time of egg-laying to 



the adult stage. 



9. (a) Trace the course of soil water from its entrance into a living plant to its 



exit from the plant. 

 (b) Name at least two ways in which the plant uses soil water. 



10. Name tlie phylum (branch) and class of each of the following: fern, sun- 

 flower, shark, whale, bacteria, seal, frog, oak, turtle, grasshopper. 



(THIS EXAMINATION IS CONTINUED ON PAGE 2) 



