Dicot stem vascular arrangement, LM

Référence de la vidéo 12371157
Dicot stem vascular arrangement. Animated light micrograph (LM) of a section of dicot stem. 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 (called pith and cortex) develops support cells to hold the young plant upright. The dicot stem has a distinct ring of vascular bundles.
Licence : Droits gérés
Crédit : Science Photo Library / Gschmeissner, Steve
Model Release : Non requis
Property release : Non requis
Durée : 12 Secondes
Aspect ratio : 16/9
Restrictions : -

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