- plant anatomy
- exact: raíz primaria (Spanish)
- exact: tap root
- exact: 一次根 (Japanese)
- alt_id: PO:0020089
- A root (PO:0009005) that develops directly from an seedling radicle (PO:0020127). [source: ISBN:0122151704, POC:curators]
- The first root of a plant. In dicots and gymnosperms it becomes the tap root, the central axis of a root system (PO:0025025).
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