microsporangium

American  

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

noun

Botany.

plural

microsporangia

1. a sporangium containing microspores.

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microsporangium British  

/ ˌmaɪkrəʊspɔːˈrændʒɪəm /

noun

1. the structure in certain spore-bearing plants in which the microspores are formed: corresponds to the pollen sac in seed plants Compare megasporangium

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microsporangium Scientific  

/ mī′krō-spə-răn′jē-əm /

plural

microsporangia

1. 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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Etymology

Origin of microsporangium

First recorded in 1880–85; micro- + sporangium

Example Sentences

Through meiosis, the microsporangium forms microspores, and the megasporangium forms megaspores.

From Textbooks • Jan. 1, 2015

Within the microsporangium, cells known as microsporocytes divide by meiosis to produce four haploid microspores.

From Textbooks • Jan. 1, 2015

As the microsporangium matures, two pollen sacs merge and an opening forms between them so that the pollen can be released.

From Textbooks • Jan. 1, 2015

Illustration A shows cross section of an anther, which has four lobes each containing a pollen sac, or microsporangium.

From Textbooks • Jan. 1, 2015

To deal first with the microsporangium or pollen-sac.

From Scientific American Supplement, No. 531, March 6, 1886 by Various