Cercozoa is a taxonomic group that refers to a diverse and widespread group of single-celled microorganisms known as protists. They are a part of the domain Eukaryota and are classified under the supergroup Rhizaria. Cercozoa is a monophyletic group, meaning that it includes all descendants of a common ancestor and excludes any other organisms.
Members of Cercozoa exhibit a variety of morphological forms, including amoeboid, flagellated, and ciliate cells. They are typically characterized by the presence of thread-like pseudopodia, which they use for feeding and locomotion. These pseudopodia are often tipped with filaments called axopodia.
Cercozoa exhibit considerable diversity in terms of habitat and ecological roles. They are found in various environments, such as freshwater, marine, and soil ecosystems. Some species are also known to be symbiotic, living in close association with other organisms.
These microorganisms are heterotrophic, meaning that they obtain nutrition by ingesting organic matter through phagocytosis. They feed on bacteria, algae, detritus, and other small organisms.
Cercozoa have important ecological roles in the ecosystem as primary consumers and as decomposers, playing a key role in nutrient cycling. They also serve as a food source for other organisms in the food chain. Additionally, some species of Cercozoa, such as the parasite Plasmodiophora brassicae, cause diseases in plants.
In conclusion, Cercozoa is a diverse group of single-celled microorganisms that exhibit various morphological forms and play important roles in ecosystem functioning.
