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Life Cycle Evolution, Seeds, Flowers - Coggle Diagram

- - - - megagametophyte= within an ovule/becomes nutritive tissue
- - - - A multicellular haploid organism gives rise to gametes. The gametes fuse to form a zygote. The zygote undergoes meiosis to produce haploid cells.
        
        The haploid daughter cells grow into the next generation of haploid organisms.
  - - - Interpolation theory posits that the sporophyte in land plants was inserted into the haplontic life cycle of green alga.
- - - - Antheridiophore: Male, Antheridia contain sperm
      - Archegoniophore: female, archegonia contain eggs
  - - - parasitic on gametophyte
        
        meiosis occurs within sporangium /sporocytes(2N) /Spores(1N)
  - - - temporary diploid sporophyte
- - - - Microgametophytes: male, antheridium, sperm
        
        Megagametophytes: female, archegonium, egg
- - - - generative cell divides into 2 sperm
      - one sperm fuses with egg
      - one sperm fuses with polar nuclei
- - - - reduced over time