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Paramecium cilia cilia macronucleus

06_10_02_Paramecium
Paramecium showing nuclei Macronucleus Micronucleus

06_10_03_Paramecium
Paramecium with nuclei and cilia Macronucleus Micronucleus Cilia Cilia

06_10_04_Paramecium
Paramecia splitting-see ya later! (no map) 

 

Originally, there were two subsections in the Protist (a/k/a Protoctista) kingdom: the Phylum_Protozoa (the animal-like protists) and the Division_Algae (the plant-like protists). Both groups were previously members of the animal and plant kingdoms, respectively. When you study zoology and botany, these groups will be included in the review of the animal and plant kingdoms. Since the early days of the Protist kingdom in the 1800’s a few more groups have been added to the kingdom, including the fungus-like (slime_molds and water_molds) protists.

The Protozoa ("first animals") are the animal-like (heterotrophic, motile) Protists and are classified (in part) based upon their method of motility (such as cilia, pseudopods, and flagella). Representatives of this group are primarily unicellular or colonial.

The Paramecium uses cilia for movement. A unique specialization of paramecia is the "double nucleus" system. They have a macronucleus, which controls all cellular functions, except those relating to reproduction. Their micronucleus regulates only reproductive functions.