MicrobeHunter.com » root http://www.microbehunter.com of Microscopy, Microbes and More Wed, 01 Feb 2012 21:31:48 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Cell division (mitosis) in the apical meristem of onion root tips http://www.microbehunter.com/2011/01/03/cell-division-mitosis-in-the-apical-meristem-of-onion-root-tips/ http://www.microbehunter.com/2011/01/03/cell-division-mitosis-in-the-apical-meristem-of-onion-root-tips/#comments Mon, 03 Jan 2011 13:24:46 +0000 Oliver http://www.microbehunter.com/?p=2955

The apical meristem is the quickly growing part of the roots and shoots of plants. It is an ideal place to observe many dividing cells. The zoom image shows two onion root tips. Try to find the different stages of mitosis, in which the chromosomes are then clearly visible. Compare the cell division stages of the onion with those in the lily: Mitosis stages of the Lily

]]> http://www.microbehunter.com/2011/01/03/cell-division-mitosis-in-the-apical-meristem-of-onion-root-tips/feed/ 1 Root of a Monocot http://www.microbehunter.com/2009/01/17/root-of-a-monocot/ http://www.microbehunter.com/2009/01/17/root-of-a-monocot/#comments Sat, 17 Jan 2009 15:34:28 +0000 Oliver http://microscopy.okim.info/?p=941 Zea mays, maize, a monocotyledonous plant ("monocot"). Epidermis, endodermis and vascular tissue is clearly visible. This is another panorama photomicrograph, assembled from four individual images.]]>
Root cross section of a monocot plant, <i>Zea mays</i>, maize, corn
Root cross section of a monocot plant, Zea mays, maize, corn.

Image Information: This is another panorama photomicrograph, assembled from four individual images. The image shows a cross-section of Zea mays, maize, a monocotyledonous plant (“monocot”).


Background Information: The picture shows epidermis (the outside layer of cells), endodermis (inside ring-shaped layer of smaller cells) and vascular tissue, the larger cells inside the endodermis, which carries water and nutrients. The water of the soil has to reach the vascular tissue towards the center of the root and is forced to go through the endodermis, which acts as a “filter”.

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