OTHER STEMS 



ln:> 



LABORATORY WORK ON ROOT8 



Test the roots of beet, carrot, parsnip, radish, and turnip with iodine 

 for starch ; with Fehling's solution for sugar; with nitric acid for protein. 

 Examine a large number of roots and report. 



Dandelion 

 Plantain 

 Carrot . 

 Dahlia . 

 Corn 

 Ivy . . 



Roots All 

 Ondbr- 



GBOTJND 



Roots not 

 A i.i. Dndeb- 



GBOCND 



l'l'.IMARV 



Kooi - 



FlBBOl - 



Booi - 



I A I. 



BOOTB 



217. Other Stems. — The stems of all plants are like the 

 stem of the bean in the work which they do, but some 

 stems have additional uses. The stems of such plants as 

 Solomon's seal, dogtooth violet, and Jack-in-the-Pulpit 

 store up surplus food. These stems are thick and fleshy, 



and remain underground from 

 year to year. For this reason 

 they are often mistaken for 

 roots, but they can always be 



Figure 282. — Potato. 

 The eyes are buds. 



Figure 283. — Dahlia "Roots." 

 An underground stem which stores food. 



