from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various minute single-celled freshwater organisms of the genus Euglena, characterized by the presence of chlorophyll, a reddish eyespot, and a single anterior flagellum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several protists, of the genus Euglena, that contain chloroplasts and a single flagellum
from The Century Dictionary and Cyclopedia
- n. The typical genus of infusorians of the family Euglenidæ.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. minute single-celled green freshwater organism having a single flagella; often classed as algae
The euglena is a protist and is one of the longer looking cells.
Close to the middle of the front of the euglena is a long skinny whip like structure called the flagellum which comes out of the organ called the mouth.
For example purposeful behavior surely occurred in unicellular eukaryotic ancestors of modern organisms like paramecia and euglena who perform rather complex adaptive movements.
You can see the giant euglena in the background of this picture.
Bir dev bir euglena, bir tek hücreli organizma modeli dönen bir kamçı da merkez dışında bulunur.
A giant rotating model of a euglena, a single-celled organism with a flagellum, also resides outside the center.
But our dumber-than-a-euglena president has folded this disaster into the "global war on terra" to make it palatable.
And finally, walk through the giant eye of a needle enlarged 1000 times, and see amoeba, euglena, paramecium and a sewing thread all enlarged to the same scale.
In the middle of the body is the nucleus which is the "control center" for the euglena, and spread out all around in the protoplasm of the euglena are green looking structures called chromatophores.
Now the euglena can find the light it needs for photosynthesis.