Section through a pine leaf
Numéro d’image : 11537160
| Light micrograph of a transverse section through the needle (leaf) of a pine tree,Pinus sp. . The centre of the leaf is occupied by two vascular bundles (butterfly-shaped region,centre),each one made up of a group of xylem tracheids (black) and a group of phloem elements (large pink areas). These are surrounded by a thick pericycle (brown) and a layer of endodermis (necklace-like ring of large dark cells). The tissue surrounding the endodermis is known as mesophyll. It is composed of cells with characteristically infolded walls,and contains seven large resin ducts. Magnification: x63 at 35mm size | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Nuridsany, Claude / Perennou, Maria |
| Taille de l’image : | 5008 px × 3564 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : |
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