Stentor is classified in the kingdom Protista. What features, both internal and external, should be considered, when classifying this organism

The correct answer for the question that is being presented above is this one: "trumpet animalcules, are a genus of filter-feeding, heterotrophic ciliate protists, representative of the heterotrichs." Stentor is classified in the kingdom Protista. The features, both internal and external, should be considered, when classifying this organism trumpet animalcules, are a genus of filter-feeding, heterotrophic ciliate protists.