Biology / Unit 9 Bio 1991 short lesson, about 20 seconds
Protist Motility
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The idea
Protists move by flagella, which they whip or rotate; by cilia, beaten in coordinated waves; or by pseudopodia, extensions anchored and pulled forward.
In practice
Paramecium swims by coordinated ciliary beating, while an amoeba extends a pseudopod, anchors it, then pulls its cytoplasm forward.
Where people slip
These three motility types are not exclusive across protists — some lineages use more than one at different life stages.
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