Assertion: endosperm | /r/CapableOf | serve as the embryo's food supply
Facets:
Source sentences:
text: As the zygote develops into an embryo, the triploid cell develops into the endosperm, which serves as the embryo's food supply.
text: The other one fuses with both polar nuclei of the central cell to form the endosperm, which serves as the embryo's food supply.