File:Monocot Root Zea (36374900095).jpg
![File:Monocot Root Zea (36374900095).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Monocot_Root_Zea_%2836374900095%29.jpg/800px-Monocot_Root_Zea_%2836374900095%29.jpg?20191005194020)
Original file (3,264 × 1,840 pixels, file size: 4.13 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]DescriptionMonocot Root Zea (36374900095).jpg |
cross section: Zea root common name: Corn magnification: 40x <a href="http://blogs.berkshirecc.edu/bccoer" rel="nofollow">Berkshire Community College Bioscience Image Library</a> The epidermis consists of a single layer of barrel shaped cells with no apparent cuticle. Root hairs appear as unicellular extensions of epidermal cells. The cortex is well-developed and roughly divisible into two zones; a narrow outer layer of smaller closely packed parenchyma cells and a wide inner layer of slightly more open aerenchyma cells. In older roots, the outer cortex appears as an exodermis of sclerenchymized collenchyma cells. The inmost area of the cortex is bounded by an endodermis of elongated cells whose walls show a narrow band of suberization, marking the Casparian stip. The outer stele is bound by a pericycle layer of thin walled parenchyma cells. 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. The central of the stele is occupied by large pith containing thin walled starch containing parenchyma cells. |
Date | |
Source | Monocot Root: Zea |
Author | Berkshire Community College Bioscience Image Library |
Licensing
[edit]![]() ![]() |
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.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
![]() |
This image was originally posted to Flickr by bccoer at https://flickr.com/photos/146824358@N03/36374900095 (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
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:40, 5 October 2019 | ![]() | 3,264 × 1,840 (4.13 MB) | Netha Hussain (talk | contribs) | Transferred from Flickr via #flickr2commons |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Date and time of data generation | 11:00, 10 February 2014 |
---|---|
Horizontal resolution | 1 dpc |
Vertical resolution | 1 dpc |
Software used | Windows Photo Editor 10.0.10011.16384 |
File change date and time | 17:35, 4 August 2017 |
Y and C positioning | Centered |
Exif version | 2.3 |
Date and time of digitizing | 11:00, 10 February 2014 |
Meaning of each component |
|
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Supported Flashpix version | 1 |
Color space | sRGB |