| Longitudinal section of a male cone of Pinus |
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With labels
Legend:
1 microsporophyll
2 microsporangium containing pollen grains
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English name: Pine
Scientific name: Pinus sp.
Familia: Pinaceae
Classis: Coniferopsida
Phylum: Gymnospermae
Regnum: Plantae
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| In the microsporangium microsporocytes undergo meiosis, giving rise to microspore that divide mitotically and form pollen grains |