Description: 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. They are often abundant in quiet inland waters where they may bloom in numbers sufficient to color the surface of ponds and ditches green (E. viridis) or red (E. sanguinea).[3] The species Euglena gracilis has been used extensively in the laboratory as a model organism.[4] Most species of Euglena have photosynthesizing chloroplasts within the body of the cell, which enable them to feed by autotrophy, like plants. However, they can also take nourishment heterotrophically, like animals. Since Euglena have features of both animals and plants, early taxonomists, working within the Linnaean two-kingdom system of biological classification, found them difficult to classify.[5][6] It was the question of where to put such "unclassifiable" creatures that prompted Ernst Haeckel to add a third living kingdom (a fourth kingdom in toto) to the Animale, Vegetabile (and Lapideum meaning Mineral) of Linnaeus: the Kingdom Protista.[7]
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All returns accepted: ReturnsNotAccepted
Publication Year: 1961
Format: Hardcover
Language: English
Book Title: EUGLENA An Experimental Organism for Biochemical and Biophysical
Author: JEROME J. WOLKEN
Topic: Biochemistry, Biology
