Zea stem, LM

Numéro d’image : 13445249
Zea stem, LM
Zea stem. Light micrograph (LM). Zea is a genus of flowering plants in the grass family.Zea mays (corn, maize) is one of the most important crops for human societies throughout the world. Zea has a monocot stem vascular arrangement. Vascular tissues transport water and dissolved substances inside the plant and helps support the stem. The two types of vascular tissue are xylem and phloem. Xylem carries water and dissolved ions from the roots to stems and leaves. Phloem carries dissolved sugars from the leaves to all other parts of the plant. Xylem has two kinds of conducting cells, tracheids and vessel elements. Ground tissue of the stem (pith and cortex) develops support cells to hold the young plant upright. The monocot stem has a random arrangement of vascular bundles with more of the bundles located toward the stem periphery than in the center. Magnification: x10 at 10 cm. wide.
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 4572 px × 3933 px
Model Release : Non requis
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