GERMINATION THE SEED WAKES UP 



43 



This arch may be caused by the weight of the cotyledons and 

 soil (as in the case of the bean), which hold back, the bulky end 

 of the plantlet until the stem is strong enough to lift it out of the 



I. Z. 3. 



C COTYUEDOMS 

 H HYFOCOTVI. 

 F "PLUMULE. 

 & L CrRouNp LINE 



GERMINATION 



ground, or (as in the case of the pea) by the tip of the plumule 

 being held tightly between cotyledons that are not lifted from 

 the ground at all. In the latter case the hold of the cotyledons 



