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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 mitosis. The two cells exchange a micronucleus. The cells then separate.
Plasmodium is a eukaryote but with unusual features. The genus Plasmodium consists of all eukaryotes in the phylum Apicomplexa that both undergo the asexual replication process of merogony inside host red blood cells and produce the crystalline pigment hemozoin as a byproduct of digesting host hemoglobin. [2]
A plasmodium is a living structure of cytoplasm that contains many nuclei, rather than being divided into individual cells each with a single nucleus. Plasmodia are best known from slime molds , but are also found in parasitic Myxosporea , and some algae such as the Chlorarachniophyta .
P. polycephalum plasmodium cultivating two "islands" of agar substrate overlying a glass coverslip. Physarum polycephalum growing from an oat flake (center) towards hairy roots of the plant Valeriana officinalis (left). Physarum polycephalum has been shown to exhibit characteristics similar to those seen in single-celled creatures and eusocial ...
Subgenus Plasmodium Bray 1963 emend. Garnham 1964; Subgenus Sauramoeba Garnham 1966; Subgenus Vinckeia Garnham 1964; Genus Polychromophilus Landau et al 1984; Genus Rayella Dasgupta 1967; Genus Saurocytozoon Lainson & Shaw 1969; Genus †Vetufebrus Poinar 2011; The genus Mesnilium is the only taxon that infects fish. The genus has a single ...
Within the Plasmodium clade lay the genera Hepatocystis, Nycteria and Polychromophilus. Plasmodium odocoiliei appeared to be very divergent in the clade. Within the palsmodium clade the reptile species formed one grouping while the subgenera Laverinia, Plasmodium and Vinkeia also formed subgroupings. These results if confirmed suggest that the ...
Diagram of Plasmodium structure. Mixotrophic protists obtain nutrients through organic and inorganic carbon compounds simultaneously. [1] All cells have a plasma membrane. In a protist, the plasma membrane is also known as the plasmalemma. Just below the plasma membrane, and in the inner fluid region, cytoplasm can be found.
The plasmodium or parts of the fruit bodies can be smaller than one millimetre, in extreme cases they are up to a square metre and weigh up to 20 kilograms (44 lb) (Brefeldia maxima). [3] Their shape is often pediculated or unstiped sporangia with non-cellular stems, but can also appear as veined or netted plasmodiocarps , pincushion-shaped ...