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Euglena Viridis
''Euglena viridis'' is a single-celled species of euglenoid, a type of microalgae. It is one of the oldest-known species of ''Euglena'', and was first seen by Antonie van Leeuwenhoek in 1764. It is found in freshwater habitats worldwide. ''Euglena viridis'', along with other ''Euglena'' species, are well-studied. Cells of ''E. viridis'' have a secondary chloroplast. The chloroplast is bounded by three layers of membrane without a nucleomorph. Taxonomy ''Euglena viridis'' is one of the first ''Euglena'' species named when Ehrenberg established the genus ''Euglena''. ''Euglena viridis'' is also the type species of this genus. The whole group of Euglenozoa was originally placed in a group called Excavata. However, Excavata has been thought not monophyletic and is divided into several groups. Now, Euglenozoa is placed below a group in Discoba. Phylogeny According to molecular evidence, phylogenetic relationships between ''Euglena viridis'' and its close relatives are as follo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Gottfried Ehrenberg
Christian Gottfried Ehrenberg (19 April 1795 – 27 June 1876) was a German Natural history, naturalist, zoologist, Botany, botanist, comparative anatomist, geologist, and microscopy, microscopist. He is considered to be one of the most famous and productive scientists of his time. Early collections The son of a judge, Christian Gottfried Ehrenberg was born in Delitzsch, near Leipzig. He first studied theology at the University of Leipzig, then medicine and natural sciences in Humboldt University of Berlin, Berlin and became a friend of the famous List of explorers, explorer Alexander von Humboldt. In 1818, he completed his doctoral dissertation on fungi, ''Sylvae mycologicae Berolinenses.'' In 1820–1825, on a scientific expedition to the Middle East with his friend Wilhelm Hemprich, he collected thousands of specimens of plants and animals. He investigated parts of Egypt, the Libyan Desert, the Nile, Nile valley and the northern coasts of the Red Sea, where he made a special ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |