The Endosperm in Inheritance 



I4S 



situation is clear. After the germination of the mega- 

 spore, everything within the old megaspore wall is 



Gymnospenn 



Archegonium 



E«g 

 Old Megaspore 

 Wall. Inclosing 

 'emale Gametopliyte] 



Angiospenn 



Egg 

 Fusion Nucleus 



Old Megaspore 



Wall, Inclosing 



Female Gametophyte 



OVULE 



Gymnospenn 



Angiospenn 



SEED 



Fig. 34. — Diagrams contrasting young ovules and mature seeds of 

 gymnosperms and angiosperms. 



gametophyte tissue; fertiUzation affects the egg only, 

 resulting in a sporophyte embryo. In the seed, there- 

 fore, the embryo is imbedded in nutritive tissue which is 



