Double Fertilization Mechanism In Angiosperms — a labelled NEET Biology diagram with a definitions lexicon.
Double Fertilization Mechanism in Angiosperms Labelled parts: Pollen tube, Ovary Wall, Integuments, Antipodal Cells, Central Cell, Polar Nuclei, Male Gamete, Synergids, Primary Endosperm Nucleus, Egg Cell, Zygote, Micropyle. A unique mechanism in flowering plants involving syngamy (egg + sperm) and triple fusion (polar nuclei + sperm). The fusion of the second male gamete with the two polar nuclei in the central cell to produce the triploid Primary Endosperm Nucleus (PEN). The triploid nucleus formed by triple fusion that develops into endosperm to nourish the embryo.