Angiosperm life cycle.
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   The  dominant  sporophyte  produces  spores  that  develop  into  male
   gametophytes (pollen grains) and female gametophytes (embryo sacs).
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   Fertilization  of  the  gametes  produces a zygote which can germinate
   into  a  seed  enclosed  within  a  fruit, and eventually grow to be a
   sporophyte.