Opisthokonta

Definition

Opisthokonta is a broad, monophyletic group of eukaryotes characterized by cells with a single posterior flagellum. This group includes both fungi and animals, as well as some unicellular organisms.

5 Must Know Facts For Your Next Test

1. Opisthokonta includes both multicellular organisms like animals and fungi, and unicellular protists.
2. The name 'Opisthokonta' refers to the rear-positioned (posterior) flagella found in some of its members.
3. This group is significant in understanding the evolutionary relationship between fungi and animals.
4. Some parasitic unicellular eukaryotes within Opisthokonta can cause diseases in humans and other animals.
5. Choanoflagellates, a type of unicellular organism within Opisthokonta, are considered to be the closest living relatives to animals.

Review Questions

Related terms

Eukaryote: An organism whose cells contain a nucleus and other organelles enclosed within membranes.

Choanoflagellate: A type of unicellular organism within Opisthokonta that is closely related to animals.

Monophyletic Group: A set of organisms that consists of all the descendants of a common ancestor.