Strictly the term is now reserved for the bacterial flagellum.
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.
That vibration can then be coupled to another structure to turn a rotor, which in turn operates a flagellum-like tail.
Electron microscopy showed clear destruction of the acrosome, cytoplasmic membrane, nuclear envelope, mitochondrial cristae, and flagellum in the UV-irradiated sperms.
The bacteria has flagellum, with which it can move freely and arrive the root to gain the carbon source.
The strain was gram negative, ellipse cell, no spores and no flagellum.