| Detail of a longitudinal section of a male cone of Pinus |
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With labels
Legend:
1 microsporophyll (2n)
3 pollen grains (contains haploid cells)
2 wall of microsporangium (2n)
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English name: Pine
Scientific name: Pinus sp.
Familia: Pinaceae
Classis: Coniferopsida
Phylum: Gymnospermae
Regnum: Plantae
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| The wall of the microsporangium dries and opens; pollen grains are then spread through the wind (anemophilous pollination) |