PLANTS GROWN ON THE FARM 65 



used as food for men and animals. The hay and pasture 

 grasses are grown to supply animals with food. Some 

 food plants are raised for their roots, like sweet pota- 

 toes, beets, carrots, parsnips, radishes, and turnips. 

 The common potato and the Jerusalem artichoke, al- 



R.OOTS USED AS FOOD 

 i, carrot; 2, turnip; 3, radish; 4, sweet potato; 5, rutabaga; 6, mangel-wurzel. 



though underground stems, are classed as root crops. 

 We eat the leaves of lettuce, cabbage, celery, and spinach, 

 the leaf stalks of rhubarb and chard, and the stems of 

 asparagus. Sugar cane is grown for the sugar which is 

 obtained from the juice of the stem. Tea is the dried 

 leaves of a shrub grown in distant lands, while coffee 



B. AND D. AG. 5 



