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# Fertilization **Process:** * The pollen tubes arrival triggers the death of one synergid, creating a passage into the embryo sac. * Two sperm are released near the female gametophyte to complete fertilization. # Double Fertilization **Process:** 1. Fertilization begins when two sperm reach th...

# Fertilization **Process:** * The pollen tubes arrival triggers the death of one synergid, creating a passage into the embryo sac. * Two sperm are released near the female gametophyte to complete fertilization. # Double Fertilization **Process:** 1. Fertilization begins when two sperm reach the female gametophyte. 2. One sperm fertilizes the egg, forming the zygote. 3. The other sperm combines with the two polar nuclei, creating a triploid (3n) nucleus in the central cell. 4. This cell develops into the endosperm (multicellular, food-storing tissue in the seed). **Double fertilization ensures** that endosperm forms only in fertilized ovules, conserving nutrients. Near this time, the tube nucleus, one synergid cell, and the antipodal cells degenerate.