BIOL-1507EL Lecture Notes - Lecture 10: Vascular Cambium, Cork Cambium, Pith
9 Feb 2017
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Document Summary
A single layer of cells covering the roots. Water and minerals are absorbed by the plant through the epidermis and root hairs. Greatly increases the surface area for absorption. The region between the epidermis and the vascular cylinder. The guard tissue of the cortex, mostly parenchyma, which functions in storage. In some species, the cortex may include collenchyma, mostly below the epidermis. The inner most layer of the cortex. Beneath the endodermis is a layer of cells from which a lateral root will develop. In most dicot roots, the stele, or the vascular cylinder form a solid core of xylem and phloem. In many monocots, the roots, or vascular tissue consists of a central core of parenchyma (pith) surrounded by alternating rings of xylem and phloem. The epidermis covers the stem as part of the dermal tissue. In gymnosperms and most eudicot stems, the vascular tissue contains vascular bundles, arranged in a ring.
