Maize root. Light micrograph of a section through the root of a maize plant (Zea mays) showing a vascular cylinder (centre). The cylinder is comprised of a central cluster of parenchyma cells (blue),surrounded by fused vascular bundles (black/green/blue) and the endodermis (black/red ring). The largest vessels seen here (white) are metaxylem,part of the xylem tissue in the vascular bundles. Xylem transports water and mineral nutrients from the roots throughout the plant,while phloem (light blue),the other component of the bundles,transports carbohydrates and plant hormones. Magnification: x44 when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 5669 px × 4976 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |