Plants and Animals
Botany
Botany: General
microsporangium

microsporangium

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views updated May 23 2018

microsporangium A sporangium (e.g. in heterosporous (see HETEROSPORY) ferns and the clubmoss Selaginella) that produces numerous minute spores which germinate to produce only male gametophytes. Those pteridophytes that produce them also produce megasporangia containing few (often only 1–4) large spores; these spores germinate to produce the female gametophytes.

A Dictionary of Plant Sciences MICHAEL ALLABY

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microsporangium

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views updated May 08 2018

microsporangium See SPORE.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

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microsporangium

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views updated May 14 2018

microsporangium See sporangium.

A Dictionary of Biology

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