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[mahy-kroh-spaw-ran-jee-uh m, -spoh-] /ˌmaɪ kroʊ spɔˈræn dʒi əm, -spoʊ-/

noun, plural microsporangia
[mahy-kroh-spaw-ran-jee-uh, -spoh-] /ˌmaɪ kroʊ spɔˈræn dʒi ə, -spoʊ-/ (Show IPA). Botany.
a containing microspores.
noun (pl) -gia (-dʒɪə)
the structure in certain spore-bearing plants in which the microspores are formed: corresponds to the pollen sac in seed plants Compare megasporangium
Plural microsporangia
A plant structure in which microspores are formed. The pollen-producing male cones of a pine consist of many microsporangia, where the microspores of the pine develop into pollen grains to be dispersed.


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  • Microspore

    [mahy-kruh-spawr, ‐spohr] /ˈmaɪ krəˌspɔr, ‐ˌspoʊr/ noun, Botany. 1. the smaller of the two kinds of spores characteristically produced by seed plants and some fern allies, developing into a male gametophyte. Compare , 2. a pollen grain. /ˈmaɪkrəʊˌspɔː/ noun 1. the smaller of two types of spore produced by some spore-bearing plants, which develops into the […]

  • Microsporocyte

    [mahy-kruh-spawr-uh-sahyt, -spohr-] /ˌmaɪ krəˈspɔr əˌsaɪt, -ˈspoʊr-/ noun, Botany. 1. one of the mother cells that produce four by meiosis. microsporocyte (mī’krə-spôr’ə-sīt’) A diploid cell that undergoes meiosis to produce microspores as part of microsporogenesis. Also called microspore mother cell, pollen mother cell.

  • Microsporogenesis

    microsporogenesis (mī’krə-spôr’ə-jěn’ĭ-sĭs) The formation of microspores inside the microsporangia (or pollen sacs) of seed plants. A diploid cell in the microsporangium, called a microsporocyte or a pollen mother cell, undergoes meiosis and gives rise to four haploid microspores. Each microspore then develops into a pollen grain (the microgametophyte).

  • Microsporophyll

    [mahy-kruh-spawr-uh-fil, -spohr-] /ˌmaɪ krəˈspɔr ə fɪl, -ˈspoʊr-/ noun, Botany. 1. a leaflike organ bearing microsporangia. /ˌmaɪkrəʊˈspɔːrəfɪl/ noun 1. a leaf on which the microspores are formed: corresponds to the stamen of a flowering plant Compare megasporophyll microsporophyll (mī’krə-spôr’ə-fĭl’) A leaflike structure that bears microsporangia, such as those of in the strobili of lycophytes or in […]

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