File:Monocot Root Vascular Bundles in Zea Prop Root (35240146803).jpg

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Cross section: Zea prop root common name: Corn Magnification: 400x

<a href="http://blogs.berkshirecc.edu/bccoer" rel="nofollow">Berkshire Community College Bioscience Image Library</a>

The vascular bundles are radially arranged with short arms of xylem interspaced with patches of phloem and parenchymous conjunctive tissue. The xylem is exarch: meaning the older smaller protoxylem is found towards the periphery and younger larger metaxylem to the center of the stem. Phloem tissues of sieve tubes, companion cells and phloem parenchyma are also exarch. The older protophloem is found towards the periphery and the younger metaphloem towards the center of the stem. Phloem parenchyma may become sclerenchymized in older roots. Vascular cambium is absent, preventing secondary growth of the root.
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Source Monocot Root: Vascular Bundles in Zea Prop Root
Author Berkshire Community College Bioscience Image Library

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This image was originally posted to Flickr by bccoer at https://flickr.com/photos/146824358@N03/35240146803 (archive). It was reviewed on 5 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero.

5 October 2019

Files from Berkshire Community College Bioscience Image Library Flickr stream uploaded by Netha Hussain

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current19:40, 5 October 2019Thumbnail for version as of 19:40, 5 October 20193,264 × 1,840 (1.05 MB)Netha Hussain (talk | contribs)Transferred from Flickr via #flickr2commons

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