A well defined group of unicellular, photosynthetic forms.
These protists belong to a division called Pyrrophyta of algae. They are a well defined group of unicellular, photosynthetic forms. Most of them are flagellated and motile but some forms are non-flagellated. Some dinoflagellates like Noctiluca and Pyrocystis contain phosphorescent granules that make the surface of the sea glow in darkness. This phenomenon is called bioluminescence. Algae: Protists with Chloroplasts. The algae are a polyphyletic and paraphyletic group of organisms. They are defined in differing ways, but are usually considered to be the photosynthetic organisms excepting plants. They are also known as protistan algae or plantlike protists. They are represented by mainly the unicellular algae. These organisms are mostly planktonic and represent the phytoplanktons which account for nearly 80% of the total photosynthetic activity in the biosphere. Autotrophic Protists: Algae The term algae embraces all photosynthetic protists. It refers to an aquatic, photosynthetic way of life, not an evolutionary kinship. Most algae live in water, but some are terrestrial. Most algae live near the surface of the water producing 30 to 50 percent of the earth's oxygen. Photosynthetic Protists Pyrrhophyta: TheDinoflagellates The dinoflagellates consist of about2100 known species of primarily uni-cellular, photosynthetic organisms,most of which have two flagella. Amajority of the dinoflagellates are ma-rine, and they are often abundant inthe plankton, but some occur in freshwater. Photosynthetic Protists. These protists belong to a division called Pyrrophyta of algae. They are a well defined group of unicellular, photosynthetic forms. Most of them are flagellated and motile but some forms are non-flagellated. Some dinoflagellates like Noctiluca and Pyrocystis contain phosphorescent granules that make the surface of the sea glow in darkness. This phenomenon is called bioluminescence. Almost all algae live in water. There are several kinds of chlorophyll. The most important chlorophyll is a. This certain type of chlorophyll is what makes photosynthesis possible, all the plants and algae that use photosynthesis contain chlorophyll a. 1. A. it is the most diverse of the plant-like protists.
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what are the photosynthetic protists