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The siphonostele shown on the left may also be called an amphiphloic siphonostele. The eustele shown on the right is collateral, i.e. with all the phloem on one side of the xylem. Siphonosteles have a central region of ground tissue called the pith , with the vascular strand comprising a hollow cylinder surrounding the pith. [ 9 ]
Pteris (brake) is a genus of about 300 species of ferns in the subfamily Pteridoideae of the family Pteridaceae. [1] [2] They are native to tropical and subtropical regions, southward to New Zealand, Australia, and South Africa, north to Japan and North America. 78 species (35 endemic) are found in China. [3]
This page was last edited on 17 March 2012, at 02:13 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
The lipid bilayer, the material that makes up cell membranes. Phospholipids, a class of amphiphilic molecules, are the main components of biological membranes.The amphiphilic nature of these molecules defines the way in which they form membranes.
Les Holden (6 March 1895 – 18 September 1932) was a fighter ace of World War I. He joined the Australian Light Horse in May 1915, serving in Egypt and France. In December 1916, he volunteered for the Australian Flying Corps and qualified as a pilot.
I have changed the pages Stela and Stele and the relevant pages linking them so that stele now refers to biological concenpt and stela to archaeological concept. Both pages also link eachother with explanations to avoid any confusion.
Lepidodendrales had tall, thick trunks that rarely branched and were topped with a crown of bifurcating branches bearing clusters of leaves.These leaves were long and narrow, similar to large blades of grass, and were spirally-arranged.
Isoeugenol is a propenyl-substituted guaiacol.A phenylpropanoid, it occurs in the essential oils of plants such as ylang-ylang (Cananga odorata), and is a component of wood smoke and liquid smoke.