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Later, various biologists described additional characteristics for Euglena and established different classification systems for euglenids based on nutrition modes, the presence and number of flagella, and the degree of metaboly.
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Euglena gracilis is a freshwater species of single-celled alga in the genus Euglena. It has secondary chloroplasts , and is a mixotroph able to feed by photosynthesis or phagocytosis . It has a highly flexible cell surface, allowing it to change shape from a thin cell up to 100 μm long to a sphere of approximately 20 μm.
Euglena is a genus of single cell flagellate eukaryotes. It is the best known and most widely studied member of the class Euglenoidea, a diverse group containing some 54 genera and at least 200 species. [1] [2] Species of Euglena are found in fresh water and salt water.
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Euglena - schéma de structure 1 noyau 2 chloroplastes 3 granules de paramylon (réserve énergétique proche de l'amidon) 4 vacuole contractile (système de régulation osmotique) 5 kinétosome 6 réservoir 7 flagelle court 8 capteur de lumiere (oeil rudimentaire) 9 stigma ("cache" pour le capteur de lumière permettant de connaitre l ...
Few insects are as beloved as the monarch butterfly. These fascinating creatures are beautiful, boldly colored and surprisingly strong — the North American monarch migrating thousands of miles ...
Rapaza Yamaguchi, Yubuki & Leander, 2012 – 1 sp. Several genera assigned to Euglenophyceae are considered incertae sedis, because the lack of genetic data makes their phylogenetic position unresolved: [3] Ascoglena Stein, 1878 – 4 spp. Euglenamorpha Wenrich, 1924 – 2 spp. Euglenopsis Klebs, 1892 – 11 spp. Glenoclosterium Carter, 1869 ...