Stentor

Definition

Stentor is a genus of unicellular eukaryotic protists, known for their trumpet-like shape and large size relative to other protozoa. Predominantly found in freshwater environments, they are notable for their cilia, which they use for feeding and locomotion.

5 Must Know Facts For Your Next Test

1. Stentor can regenerate from small fragments, making them a popular subject for studies on cellular regeneration.
2. They use cilia to create water currents that direct food particles into their gullet.
3. Stentor species have a macronucleus and one or more micronuclei, playing roles in different cellular processes.
4. Their trumpet-like shape allows them to anchor themselves while feeding.
5. Stentors exhibit a behavior called contraction, where they shorten their bodies in response to stimuli.

Review Questions

Related terms

Cilia:

Hair-like structures on the surface of some cells used for movement and feeding.

Macronucleus: The larger type of nucleus in ciliates responsible for non-reproductive cell functions.

Protozoa:

A diverse group of unicellular eukaryotic organisms often classified based on their movement mechanisms.