| Longitudinal section of a root of maize |
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Legend:
1 cortex
3 xylem
4 parenchyma
2 phloem
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English name: Corn / Maize
Scientific name: Zea mays
Familia: Gramineae
Classis: Monocotyledonas
Phylum: Angiospermae
Regnum: Plantae
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| This root contains protoxylem. These are the primary xylem elements that are formed first from the procambium. The are situated closer to the apical meristem than the metaxylem. The cell wall thickenings are usually annular or spiral-like and allowing thus stretching |