470 SPERMATOPHYTES (SEED PLANTS) 
Notable Features of Angiosperms. — In contrast to Gymno- 
sperms, the Angiosperms have the flower; a megasporophyll con- 
sisting of an ovary, in which the megasporangia are enclosed, and 
of a stigma to receive the pollen; more reduced gametophytes; 
and endosperm nucleus and double fertilization. The life cycle 
of an Angiosperm is shown in Figure 414. 
