OTHER FRUITS 



309 



place. Each ovule remains attached to the pod until the 



former changes into a seed and becomes mat inc. In bean 

 pods and string beans, ovules are often present which have 

 not developed owing to a lack of ferti- 

 lization of the egg cell. When a bean pod 

 is ripe, it splits and sometimes curls up, 

 thus helping to scatter the seeds. From 

 seed to seed again makes up the life his- 

 tory of the plant. 



In the corn, as in the bean, each ovule 

 develops into a grain of corn, if the egg 

 cell has been fertilized. The ovary ad- 

 heres so closely to the egg cell that it 

 cannot be seen as a separate organ like 

 the pod of the bean. All the maturing 

 grains of corn receive nourishment through 

 the cob to which they remain attached, and they are pro- 

 tected by the modified leaves or husks. Undeveloped 

 ovules are sometimes found in ears of corn. 



Figure 324. — 

 Dry Fruits. 



a, beechnuts ; 

 b, acorn. 



Figure 325. — Vertical Section of 

 Apple. 



A pome. 



Figure 326.- Cross Section 

 of Apple. 



A pome. 



226. Other Fruits. — The ripened ovary and its contents 

 take many forms, so that we have the fleshy fruits, such 



