👉 A brachystomous organism is an organism that has a single cell nucleus and lacks any other organelles. This means that it does not have a nucleus, mitochondria, chloroplasts, or other cellular structures. Brachystomous organisms are often found in aquatic environments, such as rivers and lakes, where they are able to survive without the need for oxygen. In summary, brachystomous organisms are characterized by their lack of cell nuclei and their ability to live
