smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte
One of the exceedingly minute spores found in certain flowerless plants, as Selaginella and Isoetes, which bear two kinds of spores, one very much smaller than the other
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Определение mikrospor в Турецкий язык Турецкий язык словарь