Amoeba and Testate amoebae

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Difference between Amoeba and Testate amoebae

Amoeba vs. Testate amoebae

An amoeba (rarely spelled amœba, US English spelled ameba; plural am(o)ebas or am(o)ebae), often called amoeboid, is a type of cell or organism which has the ability to alter its shape, primarily by extending and retracting pseudopods. Testate amoebae (formerly thecamoebians, Testacea or Thecamoeba) are a polyphyletic group of unicellular ameboid protists, which differ from naked amoebae in the presence of a test that partially encloses the cell, with an aperture from which the pseudopodia emerge, that provides the amoeba with shelter from predators and environmental conditions.

Amoeba

An amoeba (rarely spelled amœba, US English spelled ameba; plural am(o)ebas or am(o)ebae), often called amoeboid, is a type of cell or organism which has the ability to alter its shape, primarily by extending and retracting pseudopods.

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Amoebozoa

Amoebozoa is a major taxonomic group containing about 2,400 described species of amoeboid protists, often possessing blunt, fingerlike, lobose pseudopods and tubular mitochondrial cristae.

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Arcella

Arcella is a genus of testate amoebae or Arcellinida, usually found in freshwaters and mosses, and rarely in soils.

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Euglypha

Euglypha is a genus of cercozoa.

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Eukaryote

Eukaryotes are organisms whose cells have a nucleus enclosed within membranes, unlike Prokaryotes (Bacteria and other Archaea).

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Excavata

Excavata is a major supergroup of unicellular organisms belonging to the domain Eukaryota.

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Foraminifera

Foraminifera (Latin for "hole bearers"; informally called "forams") are members of a phylum or class of amoeboid protists characterized by streaming granular ectoplasm for catching food and other uses; and commonly an external shell (called a "test") of diverse forms and materials.

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Gromia

Gromia is a widespread genus of marine and freshwater amoeboids, closely resembling some foraminiferans.

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Lineage (evolution)

An evolutionary lineage is a temporal series of organisms, populations, cells, or genes connected by a continuous line of descent from ancestor to descendent.

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Lobosa

Lobosa is a taxonomic group of amoebae possessing broad, bluntly rounded pseudopods.

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Opisthokont

The opisthokonts (Greek: ὀπίσθιος (opísthios).

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Paulinella

Paulinella is a genus of about nine species of freshwater amoeboids.

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Protist

A protist is any eukaryotic organism that has cells with nuclei and is not an animal, plant or fungus.

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Pseudopodia

A pseudopod or pseudopodium (plural: pseudopods or pseudopodia) (from the Greek word ψευδοποδός, ψευδός "false" + ποδός "foot") is a temporary cytoplasm-filled projection of an eukaryotic cell membrane or a unicellular protist.

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Thecamoeba

Thecamoeba is a genus of Amoebozoa with a tough pellicle simulating a shell.

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