Answer:
it depends on what cilia you're referring for
Step-by-step explanation:
Cilia can be motile or non motile. Motile cilia can be found in the lungs, respiratory tract and middle ear. These cilia have a rhythmic waving or beating motion. They work, for instance, to keep the airways clear of mucus and dirt, allowing us to breathe easily and without irritation. They also help propel sperm.
Cilia can also be found in some peotozoans like ciliates. they used it for locomotion.