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Part of Pinus stem
Legend:
1 bark
3 growth ring
4 pith
2 xylem
English name: Pine
Scientific name: Pinus sp.
Familia: Pinaceae
Classis: Coniferopsida
Phylum: Gymnospermae
Regnum: Plantae
The annual (growth) rings indicate how old this pine stem is (10 years).
Proceed to a detail of sections through the wood viewed by scanning electron microscopy