Young pine tree stem,light micrograph
Bildnummer 11760264
| Young pine tree stem. Light micrograph of a section through a one year old primary pine (Pinus sp.). The cells of the outer epidermis (red) are thick-walled and covered with a thick layer of cuticle to prevent water loss. Beginning to form underneath the epidermis is the cork cambium (phellogen) which has produced 2 to 3 layers of cork (orange),this helps to resist forest fires. The vascular cylinder (centre) consists of a thin layer of phloem (blue) and first year xylem (red). Embedded in the xylem are scattered resin canals. The pith is at centre. Magnification: x20 when printed at 10 centimetres wide | |
| Lizenzart: | Lizenzfrei |
| Credit: | Science Photo Library / Gschmeissner, Steve |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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