In many bacteria the flagella arise from all parts of the surface of the cell.
The spirochetes are motile but flagella have not been shown to be present.
flagella are very delicate and easily broken off from the cell body.
In the former case they are termed “flagella,” in the latter “cilia.”
These flagella by a lashing movement somewhat resembling the action of oars enable the organisms to move through fluids.
Both the blastosphere and gastrula often swim freely by flagella.
By means of the lashing of these flagella in the water the tiny creature swims about.
The contractile vacuole is close to the base of the flagella.
Individual with the two flagella, and strongly contracting hinder region of the body.
If only a few whiplike threads are formed, they are called whips (flagella); if many short ones, lashes (cilia).
1852, in reference to microbes, from Latin flagellum "whip, scourge," diminutive of flagrum "whip," from PIE root *bhlag- "to strike."
flagellum fla·gel·lum (flə-jěl'əm)
n. pl. fla·gel·la (-jěl'ə)
A threadlike appendage, especially a whiplike extension of certain cells or organisms that functions as an organ of locomotion.