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Chromalveolata is a eukaryote supergroup first proposed by Thomas Cavalier-Smith as a refinement of his kingdom Chromista, which was first proposed in 1981. The origin of the Chromalveolata was thought to be a secondary endosymbiosis between a bikont (cell with two flagella) and a red alga. This union led to plastids containing chlorophyll c ...
Chromista is a proposed but polyphyletic biological kingdom, refined from the Chromalveolata, consisting of single-celled and multicellular eukaryotic species that share similar features in their photosynthetic organelles . It includes all eukaryotes whose plastids contain chlorophyll c and are surrounded by four membranes.
- Diaphoretickes
- Chromista, Cavalier-Smith 1981
Chromalveolata Current evidence suggests that species classified as chromalveolates are derived from a common ancestor that engulfed a photosynthetic red algal cell, which itself had already evolved chloroplasts from an endosymbiotic relationship with a photosynthetic prokaryote.
Dec 24, 2022 · 8.18C: Chromalveolata- Alveolates. Alveolates are defined by the presence of an alveolus beneath the cell membrane and include dinoflagellates, apicomplexans and ciliates. Evaluate traits associated with protists classified as alveolates which include dinoflagellates, apicomplexans, and ciliates.
Jul 31, 2022 · The ciliates, which include Paramecium and Tetrahymena, are a group of protists 10 to 3,000 micrometers in length that are covered in rows, tufts, or spirals of tiny cilia. By beating their cilia synchronously or in waves, ciliates can coordinate directed movements and ingest food particles.
Ovale malaria is now understood to be caused by two closely related but distinct parasite species, P. ovale curtisi and P. ovale wallikeri. 1 First described by Stephens in 1922, 21 P. ovale spp. cause acute febrile malaria with a tertian periodicity, but only rarely are associated with severe or life-threatening complications. 14,22 Ovale malar...