File:Aquatic Monocot Stem Elodea (35570465720).jpg
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[edit]DescriptionAquatic Monocot Stem Elodea (35570465720).jpg |
cross section: Elodea stem common name water weed magnification: 100x <a href="http://blogs.berkshirecc.edu/bccoer" rel="nofollow">Berkshire Community College Bioscience Image Library</a> Submerged hydrophytes like Elodea show numerous adaptations to an aquatic life. Notably there are no internal support tissues like collenchyma or sclerenchyma. The stem is entirely support by the water. The epidermis is uniseriate and photosynthetic with a thin to non-existent cuticle and scattered stomata. The bulk of the stem is occupied by a cortex that consists of a narrow outer zone of densely packed parenchyma cells and a large inner zone of aerenchyma with large radially arranged air pockets. The cells of the entire cortex contain abundant chloroplasts. Vascular tissues are limited to the central stele and show no clear differentiation into xylem and phloem. In some specimens a single xylem vessel may be seen in the center of the stele. A large air cavity occupies the center of the stele. |
Date | |
Source | Aquatic Monocot Stem: Elodea |
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@N03/35570465720 (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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current | 19:43, 5 October 2019 | ![]() | 3,264 × 1,840 (5.95 MB) | Netha Hussain (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Date and time of data generation | 11:00, 10 February 2014 |
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Software used | Windows Photo Editor 10.0.10011.16384 |
File change date and time | 10:19, 16 July 2017 |
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Date and time of digitizing | 11:00, 10 February 2014 |
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