Scanning electron micrograph (sem) of lilac leaf stomata (Syringa vulgaris). 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 x6590 (x1622 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 : | - |