The unattached stage, called a telotroch, is mouthless.
2.
When the telotroch finds suitable environs it reattaches to the substrate and transforms back into a stalked zooid.
3.
The free daughter becomes a telotroch, which swims until it finds suitable substrate to fix and develop its own stalk.
4.
When environmental conditions deteriorate the stalked zooid excises its stalk and transforms into " Vorticella's " secondary type, the motile dispersive telotroch.
5.
On the apical cap there is a prominent prototrochal band of compound cilia and an apical ciliary tuft and the trunk bears a terminal ciliary band ( telotroch ).
6.
This trochal band is also found in sessilid peritrichs, where it is ciliated only during the swarmer ( telotroch ) phase of the cell's life, during which the organism can swim freely.
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