File:Herbaceous Dicot Root Closed Vascular Bundle in Mature Ranunculus (35613584780).jpg
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Summary
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cross section: Mature Ranunculus root common name: Buttercup magnification: 400x <a href="http://blogs.berkshirecc.edu/bccoer" rel="noreferrer nofollow">Berkshire Community College Bioscience Image Library</a> The cortex is well-developed and divided into two zones; a narrow outer layer of closely packed smaller parenchyma cells (exodermis) and a wide inner layer of larger open aerenchyma cells The inmost area of the cortex is bounded by an endodermis or starch sheath with larger barrel shaped cells and thickened walls that mark the red staining casparian strip. Within the endodermis occasional small passage cells serve to transport of water into the stele or vascular bundle. The stele is bound on its outmost edge by is a pericycle of single layered thin walled parenchyma cells. The closed vascular bundles are arranged radially with arms of exarch xylem interspaced with patches of phloem and parenchymous conjunctive tissue. These tissues may become sclerenchymous in older roots Vascular cambium is also absent, preventing secondary growth of the root. |
| Date | |
| Source | Herbaceous Dicot Root: Closed Vascular Bundle in Mature Ranunculus |
| Author | Berkshire Community College Bioscience Image Library |
Licensing
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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This image was originally posted to Flickr by bccoer at https://flickr.com/photos/146824358@N03/35613584780 (archive). It was reviewed on 5 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero. |
Files from Berkshire Community College Bioscience Image Library Flickr stream uploaded by Netha Hussain
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:41, 5 October 2019 | | 3,264 × 1,840 (1.25 MB) | Netha Hussain | Transferred from Flickr via #flickr2commons |
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