DEVELOPMENT OF THE SEEDLING 187 



V. The Structure and Development of the 



Seedling 



1 6. Study, at every step in comparison with your 



records of the earlier stages, the seedling of 

 the Lima Bean. 



(1) Into what has each part of the original 



embryo developed ? 



(2) Are there any new parts not originally 



in the embryo ? 



(3) How are the new leaves placed rela- 



tively to the cotyledons and to one 

 another ? 



(4) How do the later leaves differ from 



the earlier ? 



(5) How many buds are there, and where 



are they ? 



(6) Where does hypocotyl end and root 



begin ? 



(7) Is there any regularity about the ar- 



rangement of new roots as there is 

 about new leaves ? 



Answer by an annoted sketch, bringing out the 

 above points. The labelling should express 

 clearly the morphology. 



17. After the same manner study the Horse Bean 



seedling. 



