| Radial section through the stem of pine: tracheids with bordered pits, parenchyma rays |
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Legend:
1 ray parenchyma
2 bordered pit in tracheid
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English name: Pine
Scientific name: Pinus sp.
Familia: Pinaceae
Classis: Coniferopsida
Phylum: Gymnospermae
Regnum: Plantae
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| The ray parenchyma contains living cells that enable the (horizontal) transport of nutrients and water. Tracheids are dead cells that play a role in the (vertical) transport of water and dissolved minerals. Pits in the tracheids provide a passage through which water and minerals can be flow from one cell to another. |