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The singular alga is the Latin word for 'seaweed' and retains that meaning in English. [13] The etymology is obscure. Although some speculate that it is related to Latin algēre, 'be cold', [14] no reason is known to associate seaweed with temperature. A more likely source is alliga, 'binding, entwining'. [15]
Phycology (from Ancient Greek φῦκος (phûkos) 'seaweed' and -λογία 'study of') is the scientific study of algae. Also known as algology, phycology is a branch of life science. Algae are important as primary producers in aquatic ecosystems. Most algae are eukaryotic, photosynthetic organisms
Bangiales is an order of multicellular red algae of the class Bangiophyceae containing the families Bangiaceae, Granufilaceae, [1] and possibly the extinct genus Rafatazmia with one species, Rafatazmia chitrakootensis. [2]
Ochromonadales is an order of golden algae (class Chrysophyceae), a group of photosynthetic heterokonts (phylum Ochrophyta). [8] It initially contained numerous families united only by being primarily monadoid (flagellate), palmelloid or amoeboid throughout their life cycle.
The Zygnemataceae are a family [2] of filamentous or unicellular, uniseriate (unbranched) green algae.The filaments are septated and reproduction is by conjugation; Spirogyra is commonly used in schools to demonstrate this kind of reproduction.
Chlorococcum is a genus of green algae, in the family Chlorococcaceae. [1] The alga may be useful in the flocculation of lipids from wastewater. [2] It can be found in fresh water, but is more commonly found in soil or subaerial habitats (such as growing on tree bark, wood, stones, or plaster).
Acetabularia is a genus of green algae in the family Polyphysaceae. [4] Typically found in subtropical waters, Acetabularia is a single-celled organism, but gigantic in size and complex in form, making it an excellent model organism for studying cell biology. [5]
Desmodesmus is a genus of green algae in the family Scenedesmaceae. [2] It is the only chlorophyll -containing organism known to have caused human infections in immunocompetent individuals. All known cases involved open injuries occurring in fresh water.