WHAT PLANTS NEED 9 



where the cover is weakest. Many seed coverings 

 split easily (walnut, peach pit) in certain places. The 

 sguash has a curious_jpeg_^which helps the seed to 

 escape from the cover (p, figure 6). 



What each part of the plant does. As soon as the stem 

 and leaves get above ground they begin their work. 

 The leaves absorb air and sunshine to make plant sub- / 

 stance; the stem brings water to them from the root; 2- 

 the root searches for water and soil food underneath ? 

 the earth. 



