Scanning electron micrograph (sem) of an oak leaf stoma (Quercus robur). Stomata are pores that open and close in order to regulate gas exchange in a plant. A stoma comprises a pore,the aperture of which is controlled by a pair of specialised cells known as guard cells. These cells swell to close the pore and shrink to open it. Stomata are found mainly on the underside of leaves. Magnification x10770 (2650 at 10cm wide) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Power And Syred |
Taille de l’image : | 4827 px × 3620 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |