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Published byShanon Waters Modified over 9 years ago
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Formation of Female Gamete Embryo Sac Development
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Cells of Carpel Sac are 2n Cell in Ovule divide by Meiosis and it becomes the embryo sac or Megaspore
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Meiosis 4 Haploid Cells are made 3 die and 1 survive
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Cell Division Mitosis
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8 Nuclei The Embryo Sac swells and now contains 8 nuclei This is also called the Megaspore
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Nuclei in Embryo Sac Polar Nuclei and Egg Cell survive Other Nuclei die Egg Cell 2 Polar Nuclei
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Double Fertilisation 1 male gamete from the pollen grain fuses with the egg nucleus to form the embryo plant Polar Nuclei join with the 2 nd Cell form pollen grain to form Endosperm Fertilised Ovule = Seed Integument = Testa No water needed Adaptation to life on land
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