Answer:
Step-by-step explanation:
The process of double fertilization occurs in the life cycle of angiosperms. Angiosperms are the flowering plants which exhibit stems, roots and leaves. The seeds of the angiosperms remain enclosed in the flower. The double fertilization takes place when one pollen nuclei fuses with the egg to form a zygote and the other fuses with the polar nuclei (two) so as to form endosperm.