microspore
minute spore that grows into a male gametophyte; in seed plants the microspore is the young pollen grain
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
microspore
(Science: plant biology) A haploid spore produced by a plant sporophyte that develops into a male gametophyte. In seed plants, it corresponds to the developing pollen grain at the uninucleate stage.
microspores
which develop in the microsporangium and
which will germinate and develop into the male gametophyte generation and
megaspores ...
microspore -- In plants which are heterosporous, the smaller kind of spore is called a microspore; it usually germinates into a male (sperm-producing) gametophyte. Contrast with megaspore.
microspores Four haploid cells produced by the meiotic division in the pollen sacs of þowers or microsporangia of gymnosperms. Microspores undergo mitotic division and become encased in a thick protective wall to form pollen grains.
microspore
[Gk. mikros, small + spora, a sowing]
In plants, a haploid (n) spore that develops into a male gametophyte; in seed plants, it becomes a pollen grain.
microtubule ...
microspore
The smaller of the two types of spore produced by ferns and higher plants, giving rise to the male gametophyte. In Tracheophytes the microspore is the pollen grain.
Microspore formation in plants.
Meiospores are the product of meiosis (the critical cytogenetic stage of sexual reproduction), meaning that they are haploid, and give rise to a haploid daughter cell(s) or a haploid individual.
microspore mother cell Diploid cell in microsporangium that undergoes meiosis to produce microspores.
Pollen grains are produced by meiosis of microspore mother cells that are located along the inner edge of the anther sacs (microsporangia). The outer part of the pollen is the exine, which is composed of a complex polysaccharide, sporopollenin.
 See also: Plant, Spore, Gametophyte, Flower, Division
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