Coloured scanning electron microscopy (SEM) of a cross-section of wood showing a vascular bundle. The large spaces are xylem vessels, which carry water from the roots to the leaves. The smaller vessels are phloem, which move sugars from the leaves to the rest of the plant. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Berrod, Thierry |
Modell-Rechte: | nicht erforderlich |
Länge: | 9 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |