In angiosperms, the process of double fertilization ensures that the endosperm will develop only in ovules containing a fertilized egg.
The angiosperms plants' distinctive property is double fertilization. Pollen grains are left on the stigma of the pistil or carpel after pollination. A pollen tube is created when the pollen grain on the stigma germinates. Two male gametes are released when the pollen tube that contains them descends through the pistil's style and enters the ovule's embryosac.
One of the gametes combines with the egg to create the zygote. The other male gamete fuses with the embryo sac's two polar nuclei. Triple fusion is the name given to the fertilization between two polar nuclei and one male gamete. Upon triple fusion, triploid primary endosperm cells are produced (3n).
The complete question is:
In angiosperms, the process of _________ ensures that the endosperm will develop only in ovules containing a fertilized egg.
a) cytogenesis
b) fragmentation
c) double fertilization
d) meiosis
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