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The Chrysophyceae, usually called chrysophytes, chrysomonads, golden-brown algae or golden algae, are a large group of algae, found mostly in freshwater. [3] Golden algae is also commonly used to refer to a single species, Prymnesium parvum , which causes fish kills .
Chrysophyta or golden algae is a term used to refer to certain heterokonts. Dinobryon sp. from Shishitsuka Pond, Tsuchiura , Ibaraki Prefecture , Japan It can be used to refer to:
A protist (/ ˈ p r oʊ t ɪ s t / PROH-tist) or protoctist is any eukaryotic organism that is not an animal, plant, or fungus.Protists do not form a natural group, or clade, but are a paraphyletic grouping of all descendants of the last eukaryotic common ancestor excluding plants, animals, and fungi.
In biology, a kingdom is the ... meaning that they do not consist of all the descendants of a common ancestor. The terms ... Phylum Chrysophyta; Phylum Pyrrophyta;
Its definition changed over time. In a 1957 classification of golden algae, French phycologist Pierre Bourrelly included in the order Ochromonadales all species that lack a cell wall and have a biflagellate stage during their life cycle, while those with a uniflagellate stage belonged to order Chromulinales .
The structure of these algae is unicellular, and lacks flagella.Although most desmid species are unicellular, some genera form chains of cells, called filaments. A few genera form non-filamentous colonies, with individual cells connected by threads or remnants of parent cell walls.
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Diatoms belong to a large group called the heterokonts, which include both autotrophs such as golden algae and kelp; and heterotrophs such as water moulds.The classification of heterokonts is still unsettled: they may be designated a division, phylum, kingdom, or something intermediate to those.