HO W PLANTS OBTAIN THEIR FOOD. 



105 



Fig. 95. 



Seedlings of castor-oil bean casting the seed coats, and showing papery rerm ant 

 of the endosperm. 



Fig. 96. 



Seedlings of jack-in-the- 

 pulpit; embryo backing out 

 of the seed. 



Fig. 97- 



Section of germinating embryos 

 of jack-in-the-pulpit, showing young 

 leaves inside the petiole of the 

 cotyledon. At the left cotyledon 

 shown surrounded by the endo- 

 sperm in the seed; at right endo- 

 sperm removed to show the club- 

 shaped cotyledon. 



