Changes

*Cilia

*Cilia

**Fine, short hairs covering the protozoal surface

**Fine, short hairs covering the protozoal surface each arising from a basal body

**Hairs beat in unison to enable the protozoa to move

**Hairs beat in unison to enable the protozoa to move

**Wafts food towards the cytostome (mouth opening)

**Wafts food towards the '''cytostome''' (mouth opening)

**E.g. ''Balantidium''

**E.g. ''Balantidium''