All Eukaryotic Unicellular Organisms Belong To _______
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Answer:
• All unicellular eukaryotic organisms belongs to kingdom Protista.
Explanation:
• According to the five kingdom system of classification of living organisms by R.H. Whittaker the unicellular eukaryotic organisms belong to kingdom Protista.
• The organisms belonging to kingdom Protista are of large variety.
• While most of them are unicellular there are some algae which are multicellular and are placed in this kingdom.
• They also have differences in their type of nutrition because some of them are autotrophs, some heterotropes and some of them are even Mixotrpophs.
• Example :- Euglena, Paramecium.
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All eukaryotic unicellular organisms belong to Protista
Protist, any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms. They may share certain morphological and physiological characteristics with animals or plants or both. The term protist typically is used in reference to a eukaryote that is not a true animal, plant, or fungus or in reference to a eukaryote that lacks a multicellular stage.
From the time of Aristotle, near the end of the 4th century BCE, until well after the middle of the 20th century, the entire biotic world was generally considered divisible into just two great kingdoms, the plants and the animals. The separation was based on the assumption that plants are pigmented (basically green), nonmotile (most commonly from being rooted in the soil), photosynthetic and therefore capable solely of self-contained (autotrophic) nutrition, and unique in possessing cellulosic walls around their cells. By contrast, animals are without photosynthetic pigments (colourless), actively motile, nutritionally phagotrophic (and therefore required to capture or absorb important nutrients), and without walls around their cells.
Features Unique To Protists
Protists vary greatly in organization. Some are single-celled; others are syncytial (coenocytic; essentially a mass of cytoplasm); and still others are multicellular. (While protists may show multicellularity, they are never multitissued.) They may manifest as filaments, colonies, or coenobia (a type of colony with a fixed number of interconnected cells embedded in a common matrix before release from the parental colony). Not all protists are microscopic. Some groups have large species indeed; for example, among the brown algal protists some forms may reach a length of 60 metres (197 feet) or more. A common range in body length, however, is 5 μm (0.0002 inch) to 2 or 3 mm (0.08 or 0.1 inch); some parasitic forms (e.g., the malarial organisms) and a few free-living algal protists may have a diameter, or length, of only 1 μm.
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Protist, any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms. They may share certain morphological and physiological characteristics with animals or plants or both. The term protist typically is used in reference to a eukaryote that is not a true animal, plant, or fungus or in reference to a eukaryote that lacks a multicellular stage.
From the time of Aristotle, near the end of the 4th century BCE, until well after the middle of the 20th century, the entire biotic world was generally considered divisible into just two great kingdoms, the plants and the animals. The separation was based on the assumption that plants are pigmented (basically green), nonmotile (most commonly from being rooted in the soil), photosynthetic and therefore capable solely of self-contained (autotrophic) nutrition, and unique in possessing cellulosic walls around their cells. By contrast, animals are without photosynthetic pigments (colourless), actively motile, nutritionally phagotrophic (and therefore required to capture or absorb important nutrients), and without walls around their cells.
Features Unique To Protists
Protists vary greatly in organization. Some are single-celled; others are syncytial (coenocytic; essentially a mass of cytoplasm); and still others are multicellular. (While protists may show multicellularity, they are never multitissued.) They may manifest as filaments, colonies, or coenobia (a type of colony with a fixed number of interconnected cells embedded in a common matrix before release from the parental colony). Not all protists are microscopic. Some groups have large species indeed; for example, among the brown algal protists some forms may reach a length of 60 metres (197 feet) or more. A common range in body length, however, is 5 μm (0.0002 inch) to 2 or 3 mm (0.08 or 0.1 inch); some parasitic forms (e.g., the malarial organisms) and a few free-living algal protists may have a diameter, or length, of only 1 μm.
Hope it helps!
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