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Paramecium feed on microorganisms such as bacteria, algae, and yeasts. To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove (vestibulum, or vestibule), and into the cell. The food passes from the cilia-lined oral groove into a narrower structure known as the buccal ...
Added a label for the buccal overture, a structure frequently mislabeled as the cytostome on diagrams of Paramecium. For an accurate representation of these structures, see: Ralph Wichterman, The Biology of Paramecium, 2nd Edition, 1986 (fig. 1.3A, on...
Paramecium caudatum [1] is a species of unicellular protist in the phylum Ciliophora. [2] They can reach 0.33 mm in length and are covered with minute hair-like organelles called cilia. [3] The cilia are used in locomotion and feeding. [2] The species is very common, and widespread in marine, brackish and freshwater environments. [4] [5]
Stages of conjugation Stages of conjugation in Paramecium caudatum. In Paramecium caudatum, the stages of conjugation are as follows (see diagram at right): Compatible mating strains meet and partly fuse; The micronuclei undergo meiosis, producing four haploid micronuclei per cell. Three of these micronuclei disintegrate. The fourth undergoes ...
The parts are as follows: 1) food vacuoles 2) micronucleus 3) oral groove 4) gullet 5) anal pore 6) contractile vacuole 7) macronucleus 8) cilia. Paramecium move by executing a whiplash movement with the cilia. The cilia also function to help the organism gather food by using them to sweep prey organisms through the oral groove, and into the ...
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The group contains free-living and parasitic organisms, predatory flagellates, and photosynthetic organisms. Transmission electron micrograph of a thin section of the surface of the ciliate Paramecium putrinum, showing the alveoli (red arrows) under the cell surface. Almost all sequenced mitochondrial genomes of ciliates and apicomplexa are ...
The spongiome serves several functions in water transport into the contractile vacuole and in localization and docking of the contractile vacuole within the cell. Paramecium and Amoeba possess large contractile vacuoles (average diameter of 13 and 45 μm, respectively), which are relatively comfortable to isolate, manipulate and assay.