The Rhizaria are a diverse and species-rich supergroup of mostly unicellular [3] eukaryotes. [4] Except for the Chlorarachniophytes and three species in the genus Paulinella in the phylum Cercozoa, they are all non-photosynthetic, but many Foraminifera and Radiolaria have a symbiotic relationship with unicellular algae. [5]

Rhizaria. The Rhizaria supergroup includes many of the amoebas, most of which have threadlike or needle-like pseudopodia (Figure \(\PageIndex{13}\)). Pseudopodia function to trap and engulf food particles and to direct movement in rhizarian protists. These pseudopods project outward from anywhere on the cell surface and can anchor to a substrate.

2024年11月23日 · Two major subclassifications of Rhizaria include Forams and Radiolarians. Forams are characterized as unicellular heterotrophic protists that have porous shells, referred to as tests, which can contain photosynthetic algae that the foram can use as a nutrient source.

The Rhizaria supergroup includes many of the amoebas with thin threadlike, needle-like or root-like pseudopodia (Ammonia tepida, a Rhizaria species, can be seen in Figure 1), rather than the broader lobed pseudopodia of the Amoebozoa.

2023年8月22日 · Rhizaria is a supergroup of single-celled eukaryotes with great diversity in morphology, physiology, and habitat, which includes free-living, parasitic, freshwater, terrestrial, and marine organisms. Rhizaria's taxonomic classification falls under the domain Eukarya and the Kingdom Protista.

Rhizaria: this is a diverse group of mostly heterotrophic unicellular eukaryotes including both amoeboid and flagellate forms [35]. Two iconic protist groups, Haeckel's Radiolaria and the Foraminifera, are members of the Rhizaria.

A striking example concerns the supergroup Rhizaria, which comprises several groups of uncultivable free-living protists such as radiolarians, foraminiferans and gromiids, as well as the parasitic plasmodiophorids and haplosporids.