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Green algae are also found symbiotically in the ciliate Paramecium, and in Hydra viridissima and in flatworms. Some species of green algae, particularly of genera Trebouxia of the class Trebouxiophyceae and Trentepohlia (class Ulvophyceae), can be found in symbiotic associations with fungi to form lichens. In general the fungal species that ...
The Ulvophyceae or ulvophytes are a class of green algae, [3] distinguished mainly on the basis of ultrastructural morphology, life cycle and molecular phylogenetic data. [4] The sea lettuce, Ulva, belongs here. Other well-known members include Caulerpa, Codium, Acetabularia, Cladophora, Trentepohlia and Monostroma.
Streptophyte algae include all green algae, and are the only photosynthetic eukaryotes from which the macroscopic land flora evolved (red lines). That said, throughout the course of evolution, algae from various other lineages have colonized land (yellow lines) —but also streptophyte algae have continuously and independently made the wet to ...
Within the green algae, the earliest-branching lineages were grouped under the informal name of "prasinophytes", and they were all believed to belong to the Chlorophyta clade. [46] However, in 2020 a study recovered a new clade and division known as Prasinodermophyta , which contains two prasinophyte lineages previously considered chlorophytes ...
The Chlorophyceae are one of the classes of green algae, distinguished mainly on the basis of ultrastructural morphology. [2] They are usually green due to the dominance of pigments chlorophyll a and chlorophyll b. The chloroplast may be discoid, plate-like, reticulate, cup-shaped, spiral- or ribbon-shaped in different species.
Chlamydomonas (/ ˌ k l æ m ɪ ˈ d ɒ m ə n ə s,-d ə ˈ m oʊ-/ KLAM-ih-DOM-ə-nəs, -də-MOH-) is a genus of green algae consisting of about 150 species [2] of unicellular flagellates, found in stagnant water and on damp soil, in freshwater, seawater, and even in snow as "snow algae". [3]
Volvox is a polyphyletic genus of chlorophyte green algae in the family Volvocaceae. Volvox species form spherical colonies of up to 50,000 cells, and for this reason they are sometimes called globe algae. They live in a variety of freshwater habitats, and were first reported by Antonie van Leeuwenhoek in 1700.
Most members of both families live in freshwater, and form an important component of the algal scum that grows on or near plants and rocks. Systematically they fall within the division Charophyta/Streptophyta, in which the land plants (Embryophyta) emerged. [3] Sexual reproduction in Zygnematales takes place through a process called conjugation ...