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( Brown alga)
The Phaeophyceae or brown algae, (singular alga) is a large group of mostly marine multicellular algae, including many seaweeds of colder Northern Hemisphere waters. They play an important role in marine environments both as food, and for the habitats they form. For instance Macrocystis, a member of the Laminariales or kelps, may reach 60&_160;m in length, and forms prominent underwater forests. Another example is Sargassum, which creates unique habitats in the tropical waters of the Sargasso Sea. This is one of the few areas where a large biomass of brown algae may be found in tropical waters. Many brown algae such as members of the order Fucales are commonly found along rocky seashores. Some members of the division are used as food for humans. Worldwide there are about 1500-2000 brown seaweed species.[1] Brown algae belong to a very large group, the Heterokontophyta, a eukaryotic group of organisms distinguished most prominently by having chloroplasts surrounded by four membranes, suggesting an origin from a symbiotic relationship between a basal eukaryote and another eukaryotic organism. Most brown algae contain the pigment fucoxanthin, which is responsible for the distinctive greenish-brown color that gives them their name. Brown algae are unique among heterokonts in developing into multicellular forms with differentiated tissues, but they reproduce by means of flagellate spores, which closely resemble other heterokont cells. Genetic studies show their closest relatives to be the yellow-green algae. The plants are filamentous, macroscopic or microscopic some polyiphonous. Some form crusts, cushions or are hollow and others grow to form large leathery fronds.[2] The cells of most browns are connected by pores.[3] They bear a unilocular (one holed) sporangium.[3]
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Brown alga Subcategories
Brown alga Articles
Marine Algae Weightloss With fucoTHIN by Ben Pate
Do you hope for an all natural way of losing weight to not only burn fat, but also increase your metabolism as well as to avoid potential side effects of the vast majority of weight loss supplements that are available on the market? If you already tr...
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