106 PHYSIOLOGICAL PROCESSES IN PLANTS 



References 



Hunter, Essentials of Biology. Chap. IX. 



Osterhout, Experiments ivith Plants. Chap. V. 



Coulter, Plant Relations. Chap. III. 



Coulter, Barnes, and Cowles, A Textbook of Botany. Vol. II. 



PROBLEM XIX (Optional) 

 Some uses of stems. 



a. Special Products from Stems 



1. Fill in the following table. (See Chap. X, Hunter, Essentials of 

 Biology.} 



SUBSTANCE 



SOURCE 



Food 



Lumber 



Cork 



Linen 



Wood Pulp 



Latex For Rubber . . . 



Resin 



Sugar Sap 



Hemp 



Turpentine 



Fuel 



Tannin 



Peruvian Bark (Quinine) 

 Cassava 



2. Write a paragraph summing up the information shown. 



b. Some Woods and their Value 



1. Find out as many woods as you can that are of value because of 

 the properties listed in the following table, and put in the proper column. 

 (See Hunter, Essentials of Biology, Chap X.) 



