👉 Polyzoa, also known as protozoans or protists, are unicellular eukaryotic organisms that lack a nucleus and contain only one cell. They are characterized by their large size, which allows them to grow rapidly in water and other environments. Polyzoa play important roles in the food chain of aquatic ecosystems, where they help to break down dead matter and recycle nutrients. Polyzoal cells are typically sessile (living on a surface) and have a cell wall made of
