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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]
"Flagellata" from Ernst Haeckel's Artforms of Nature, 1904 Parasitic Excavata (Giardia lamblia) Green algae (Chlamydomonas). A flagellate is a cell or organism with one or more whip-like appendages called flagella.
Flagellated lifecycle stages are found in many groups, e.g., many green algae (zoospores and male gametes), bryophytes (male gametes), pteridophytes (male gametes), some gymnosperms (cycads and Ginkgo, as male gametes), centric diatoms (male gametes), brown algae (zoospores and gametes), oomycetes (assexual zoospores and gametes), hyphochytrids ...
Chlamydomonas reinhardtii is a single-cell green alga about 10 micrometres in diameter that swims with two flagella.It has a cell wall made of hydroxyproline-rich glycoproteins, a large cup-shaped chloroplast, a large pyrenoid, and an eyespot apparatus that senses light.
They are aquatic single-celled flagellated algae, with two heterokont flagella each, ... They can be found in marine and freshwater habitats. [10] Systematics
The other flagella is typically shorter, potentially even shortened to just a basal body, and is generally smooth and whip-like. [7] In Green Algae; Green algae have a life cycle that includes an alternation of generations. [9] Zoids can be found in both the haploid and the diploid phases of this life cycle in certain green alga.
There are two clades of Chlorophyceae as defined by the arrangement of their flagella, called CW and DO. Members of the CW clade have flagella that are displaced in a "clockwise" (CW, 1–7 o'clock) direction e.g. Chlamydomonadales. Members of the DO clade have flagella that are "directly opposed" (DO, 12–6 o'clock) e.g. Sphaeropleales. [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.