134 



FLOWER-LAND. 



Sometimes it happens very soon after pollination, but 

 sometimes there is quite a long interval before it does 



so. But when fer- 

 tilisation has taken 

 place the ovules 

 very greatly change. 

 As a general rule 

 the other parts of 

 the flower, calyx, 

 corolla, and stamens 



Fig. 113. OvulTshortly after fertilisation. die away, and all 

 P, pollen tube ; i, inner covering of the the ener CT V of the 

 ovule, k ; S, inner bag containing vital part 



of ovule at E, which has now become the plant is ^iven to the 

 embryo or germ of the seed ; /, funicle, see 



Appendix. ovary or ovaries of 



the pistil, that the ovules within may be matured as 

 seeds ; for after fertilisation the young plant or 

 embryo, with a supply of food for its first days of 

 life, is gradually formed within the ovule. In other 

 words, the ovule becomes changed into a seed, safely 

 housed within the .ovary ; and the whole gradually 

 ripens as Fruit. (Fig. 108.) 



