250 



ELEMENTS OF GENERAL SCIENCE 



during the summer commonly serves for the plant's growth 

 during the earlier part of the following season. 



The large amount of food which is brought together 

 within a small space makes these storage organs of plants an 



FIG. 120. Plant organs in which food is stored 



A, root of carrot ; B, tuber of potato ; C, bulb of onion ; D, seeds of bean ; 

 E, seeds of corn 



important article of food for men and animals. The starch and 

 proteins which are stored in wheat are the valuable things in 

 wheat, and this is the most important single food for the Cau- 

 casian race. In the Orient China, Japan, India the food 

 storehouse that is of greatest importance is the rice grain, and 



