Protists with two nuclei

Explanation

Ciliates are a group of protists distinguished by having two types of nuclei: a macronucleus and one or more micronuclei. The macronucleus controls non-reproductive cell functions, while the micronuclei are involved in reproductive processes. This distinct feature sets them apart from other protists. Actinopods, zooflagellates, and apicomplexans do not typically have two nuclei; instead, they are characterized by other features such as their movement mechanisms or parasitic nature.