File:Monocot Stem Zea (35754019861).jpg
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| Description |
cross section: Zea stem magnification: 40x <a href="http://blogs.berkshirecc.edu/bccoer" rel="nofollow">Berkshire Community College Bioscience Image Library</a> A single layered, cutinized epidermis overlies an interior composed entirely of cortical tissues. Within the cortex a few layers of sclerenchyma can be seen just beneath the epidermis. Below that lies a cortical region composed entirely of loosely packed thin walled parenchyma and intercellular spaces. There is no apparent stele, rather the vascular bundles are scattered throughout the cortex with numerous small bundles crowded nearly the periphery of the stem and fewer larger bundles towards the center of the stem. The vascular bundles are closed and collateral. Xylem is oriented towards the center of the stem and small amounts phloem to the outside. Cambium is lacking preventing secondary growth. In mature vascular bundles, the earliest protoxylem may break down to produce a large protoxylem cavity. The vascular bundles are wrapped in a bundle sheath of thick walled supportive sclerenchyma cells. Unlike most grasses Zea stems are not hollow at the center. |
| Date | |
| Source | Monocot Stem: Zea |
| Author | Berkshire Community College Bioscience Image Library |
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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@N03/35754019861 (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 | 19:43, 5 October 2019 | | 3,264 × 1,840 (1.93 MB) | Netha Hussain (talk | contribs) | Transferred from Flickr via #flickr2commons |
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