Assertion: angiosperm's fertilization | /r/CapableOf | involve the fusion of two male gametes
Facets:
value: to form the primary endosperm
type: PURPOSE
value: to form the zygote
type: PURPOSE
Source sentences:
text: In angiosperms, the process of seed development begins with double fertilization, which involves the fusion of two male gametes with the egg cell and the central cell to form the primary endosperm and the zygote.