1. Number per cell ranging from 300 to 14000, occurring all over the surface of cell.
2. Very small in size, 5-10µ long.
3. Cilia beat in a coordinated rhythm either simultaneously (synchronous) or one after the other (metachronic).
4. Help in locomotion, feeding circulation, aeration, etc.
1. Number is very less, usually 1-4 per cell.
2. Much longer, about 150µ long.
3. They beat independent of each other.
4. Help in locomotion only.