Seed-bearing plants produce microspores during meiosis as part of the reproductive process. These become the pollen grains, according to Michael J. Gregory, Ph.D at Clinton Community College of the State University of New York. These pollen grains fertilize the egg cells, which produce seeds.
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Marie Notnats enjoys learning about new topics and teaching people new skills. She has been writing professionally since 2008. She is a professional horticulturist with a Bachelor of Science degree in horticulture from Brigham Young University. She writes for About.com, Examiner.com, eHow, and assorted gardening blogs.