Tue February 15, 2011 By: Oshina Jain

only 2 male germ cell transfer through style & fuses with egg?

Expert Reply
Wed February 16, 2011
Dear student,
In double fertilization, two sperm nuclei of a pollen grain unite with nuclei of the embryo sac of an angiosperm plant. One sperm nucleus unites with the egg to form the diploid zygote, from which the embryo develops. The other sperm unites with the two nuclei located in a single cell at the center of the embryo sac. Together these nuclei form the triploid nucleus of the cell from which the nutritive endosperm develops that will provide energy for the embryo's growth and development.
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