Common sorrel leaf. Coloured scanning electron micrograph (SEM) of the surface of a common sorrel (Rumex acetosa) leaf. Two stomata (leaf pores,brown rings) can be seen. Stomata are the site of gaseous exchange in a plant. The opening and closing of the stomata is controlled by semi-circular guard cells. When the guard cells are turgid the stomata are open and when they are flaccid the stomata are closed. Magnification: x450 when printed at 10 centimetres tall | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Diller, Stefan |
Bildgröße: | 3555 px × 4960 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |