| Transverse section through the aerial root of an epiphytic orchid |
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With labels
Legend:
1 velamen
3 vascular cylinder
2 cortex
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English name: Orchid
Scientific name: Oncidium sp.
Familia: Orchidaceae
Classis: Monocotyledonas
Phylum: Angiospermae
Regnum: Plantae
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| The thick cell walls of the velamen also give mechanical protection for the cortex. The velamen also plays a role in water absorption. |