arcella

A genus of amoeba-like protozoans characterized by a chitinous shell that resembles an umbrella, found in freshwater environments.

• 🇨🇳一种淡水生活的原生动物，属于变形虫类，具有几丁质外壳，壳形似伞或圆盘。

1. Amoeba-like protozoan C2 formal scientific

   A single-celled organism with a chitinous shell that resembles an umbrella, belonging to the genus Arcella.

   • Under the microscope, the arcella moved slowly across the slide.
   • The arcella's shell protects it from predators.
   • Scientists study arcella to understand protozoan evolution.

   🇨🇳表壳虫