Maidenhair tree (Ginkgo biloba) petiole. Light micrograph of a section through a petiole (leaf stalk) from a maidenhair tree (Ginkgo biloba),showing its thick cuticle and thick-walled epidermis (red) and hypodermis (subcutaneous tissue,light-brown). Stomata (pores) and guard cells can also be seen,along with chloroplasts,and mesophyll tissue composed of parenchyma cells (blue-brown). The vascular tissue is composed of xylem tracheid cells (red) and phloem sieve tube cells (brown). Magnification: x13 when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 4925 px × 3941 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |