Microsporangia develop male sex cells into four spores {microspore}. Two microspores are tube nuclei. Two microspores are generative nuclei. One tube nucleus and one generative nucleus make one pollen grain, so process makes two pollen grains.
Biological Sciences>Botany>Plant>Vascular>Angiosperm>Flower>Parts>Stamen>Anther
4-Botany-Plant-Vascular-Angiosperm-Flower-Parts-Stamen-Anther
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Date Modified: 2022.0224