What structural features distinguish ciliates from other unicellular organisms?

So, it should be clarified that the ciliate belongs to the simplest and is a unicellular organism. The distinctive features of the structure are directly:

1) The presence of special purpose organelles, namely cilia. They differ from flagella in their length. They are short in comparison.

2) The second distinctive feature is the presence of two nuclei: the micronucleus – a small nucleus, which is more involved in the function of reproduction and division (since it undergoes significant changes) and the macronucleus – a large nucleus, which provide control over the vital activity of the whole organism.

3) The presence of a cellular mouth, cell pharynx and powder – an organelle responsible for removing undigested food debris.