Pea plant xylem. Coloured scanning electron micrograph (SEM) of a longitudinal section through the stem of a pea plant (Pisum sativum). Within the stem are xylem vessels. A xylem vessel is made up of individual cells that are dead. The cross walls separating individual cells have broken down to form a continuous tube-like structure,which is capable of transporting water and minerals from the roots to the rest of the plant. These vessels have a unique secondary wall thickening,which can be,for example,spiral (seen here). Magnification: X920 at 10 centimetres across | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
Taille de l’image : | 5000 px × 3494 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |