Stomata of a horsetail leaf (Equisetum sp), coloured scanning electron micrograph (SEM). The leaf is reduced to a scale on the joint of the stem. Stomata (singular = stoma) are tiny openings in the epidermis of a plant that are surrounded by pairs of crescent-shaped cells, called guard cells, that facilitate gas exchange. Magnification: x345 when shortest axis printed at 25 millimetres. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / DENNIS KUNKEL MICROSCOPY |
Taille de l’image : | 3311 px × 2639 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |