Is Stentor Prokaryotic or Eukaryotic?

Finally, as we learned in the previous section, all protists are eukaryotic, meaning they have a defined nucleus. Because the Stentor organisms are relatively large for unicellular beings, they actually have a macronucleus

macronucleus
A macronucleus (formerly also meganucleus) is the larger type of nucleus in ciliates. Macronuclei are polyploid and undergo direct division without mitosis. It controls the non-reproductive cell functions, such as metabolism. ... The macronucleus contains hundreds to thousands of chromosomes, each present in many copies.
› wiki › Macronucleus
that stretches the length of the body.

What group does Stentor belong to?

Also known as the “trumpet animalcule,” Stentor belongs to the class Spirotrichea in the phylum Ciliophora. They are some of the largest protozoans known and some species can be up to two millimeters (0.08 inch) long.

What is a Stentor cell?

Stentor, sometimes called trumpet animalcules, are a genus of filter-feeding, heterotrophic ciliates, representative of the heterotrichs. They are usually horn-shaped, and reach lengths of two millimeters; as such, they are among the biggest known extant unicellular organisms.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.