THE FLOWER JjJ J 101 



EXERCISE 93 

 ROOTS 



Apparatus and Materials. Garden trowel, the germination box of 

 Exercise 88, glasses of water, dandelion, sweet potato, dahlia roots, 

 turnip, parsnip, carrot, onion. 



a. Read 316 of the text. Carefully loosen the soil around 

 a young radish in the germination box, and take out the plant 

 without injuring its roots. Note how the root hairs cling to 

 the particles of soil. Why do they? 



Put the root into a glass of water, and note the multitude of 

 root hairs. Make a drawing of the entire plant. 



b. To which of the two classes of primary roots do the roots 

 of radishes belong? Carefully dig up a grass plant, place the 

 roots in water, and wash off the soil. To which class do the 

 roots of grass belong? Make a sketch of them. 



In the same way examine, describe, and sketch the roots of 

 the bean, pea, squash, clover, and corn seedlings. 



c. Dig up a dandelion; \o which class does its root belong? 

 Examine the root of a dahlia; to which class does it belong? 

 How does it differ from the root of the grass? 



d. How do you know that a sweet potato is a root, while an 

 ordinary potato is a modified stem? 



If possible, examine the roots of the turnip, parsnip, and 

 carrot. To what class of roots do they belong? Is an onion a 

 root? Prove your answer. 



e. Give 3 important uses of roots. 



EXERCISE 94 

 THE FLOWER 



Materials. A simple flower, also clover and dandelions. The 

 kind of simple flower will depend somewhat on the season and the 

 location of the school. Among wild flowers the trillium, spring beauty, 



