Leaf stomata. Light micrograph of a vertical section down through the surface of a leaf from a Scots pine tree (Pinus sylvestris),showing a stoma (central space) surrounded by two guard cells (left and right). The surface of the leaf is across top. The stoma,an opening in the surface of a leaf,is opened and closed as the guard cells expand and contract. This regulates the passage of air into and out of the leaf through the stoma. The surface of a plant is covered with millions of stomata | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 5197 px × 4134 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |