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Euglena

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Euglena

Genus of single-celled organisms in the protozoan phylum Sarcomastigophora that live in fresh water. They are usually oval or cigar-shaped, less than 0.5 mm/0.2 in long, and have a nucleus, green pigment in chloroplasts, a contractile vacuole, a light-sensitive eyespot, and one or two flagella, with which they swim. A few species are colourless or red.

Classification

Euglena are members of the order Euglenida in class Phytomastigophora, subphylum Mastigophora, phylum Sarcomastigophora.

This organism combines animal and plant characteristics. Its plantlike characteristics include the chloroplasts and its consequent ability to photosynthesize, and the rigid cellulose wall of some species. Its main animal characteristic is its motility, but it can also absorb food from its environment, and many species have a flexible body covering.
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Studying the two-balloon device might yield some insights into biology because its movements vaguely resemble contortions that microbes known as euglena use to propel themselves, he adds.
Artificial animalcules: in the microscopic realm, machines learn to ... by Weiss, Peter / Science News
They may look a bit like single-celled organisms such as a euglena or paramecium, but the fish and worm parasites called myxozoans are not protozoans, says Richard D.
Protist joins metazoan family tree by Science News
Working with a committee of science teachers and students, Plass developed a research program based on the study of primitive critters such as euglena, paramecia and simple bacteria.
'Go for it, kid': looking back on five decades of the Science Talent ... by Cowen, Ron / Science News
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