Coloured scanning electron micrograph (SEM) of a stoma on a Boston ivy (Parthenocissus tricuspidata) plant. Stomata are pores that are the site of gaseous exchange in the plant. The opening and closing of the stomata is controlled by semicircular guard cells. When the guard cells are turgid the stomata are open and when they are flaccid the stomata are closed. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gaff, Karl |
Bildgröße: | 4827 px × 3621 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |