Female sporangium of a pine |
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Without labels Legend:
1 megasporophyll 3 integument 4 megasporocyt 5 megasporangium tissue 2 megasporangium wall 6 micropyle
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English name: Pine Scientific name: Pinus sp. Familia: Pinaceae Classis: Coniferopsida Phylum: Gymnospermae Regnum: Plantae
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Female sporangium (carrier of spores = megasporocyt = macrosporocyt) of a pine. After meiosis the megasporocyte forms 4 megaspores, from which 3 degenerate. The functional megaspore forms the megagametophyte with the archegonium in which the egg cells develops. |