Infusoria-slipper belongs to the kingdom of the protozoa. All protozoa (hence the name) consist of one cell, however, all the signs of living organisms are inherent in this cell: nutrition and vital activity, growth and development, reproduction, the ability to move, etc. The peculiarity of the protozoa is reproduction by division, the ability to form cysts to withstand adverse environmental conditions. Among the protozoa, there are both autotrophic and heterotrophic living organisms.
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