TESTS 215 



Achievement Test 



1. How would you grow bacteria ? 



2. What is the favorite food of bacteria ? 



3. What are the factors necessary for bacteria to grow? 



4. In what ways are bacteria useful to the farmer? 



5. What are at least five parasitic fungi that do harm ? 



6. How would you prevent mold growth ? 



7. How can you explain the process of making bread ? 



8. What examples of all the four large groups of plants have you 

 found in your environment ? 



9. Where would you find the following plants : red algae, pleuro- 

 coccus, yeast, puffballs, pigeon- wheat moss, Christmas fern? 



10. How many flowers of the families of flowering plants mentioned 

 in this unit have you been able to identify? 



Practical Problems 



1. Make a table showing all the ways in which bacteria affect your 

 daily life for good or ill. 



2. Make similar tables for both molds and yeasts. 



3. Make a collection of your local flowering plants and classify 

 them according to some simple key. 



4. Identify all the harmful plants in your locality. To do this get 

 the use of a good manual on weeds or one of the state publications on 

 weeds. The manual published by the University of Iowa is one of the 

 best. 



Useful References 



Book of Knowledge. (Grolier Society.) 



Broadhurst, Home and Community Hygiene. (J. B. Lippincott Co. 



1925.) 

 Conn, Bacteria, Yeasts. and Molds of the Home. (Ginn & Co. 1917.) 

 Downing, Our Living World. (Longmans, Green & Co. 1924.) 

 DeKruif, Microbe Hunters. (Harcourt, Brace & Co. 1926.) 

 Kendall, Civilization and the Microbe. (Houghton, Mifflin. 1923.) 

 Mathews, Book of Wild Flowers for Young People. (G. P. Putnam's 



Sons. 1923.) 

 Parsons, How to Know the Wild Flowers. (Charles Scribner's Sons.) 



