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Paramecium is a singled cell organism. It belongs in the kingdom, protista, and the phylum, ciliaphora. This is often called Lady Slipper.
Paramecium jenningsi - paramecium fed with dead bacteria stained red and with some indian ink added, such that food vacuoles form that are red and black in colour. These are normal sized food vacuoles (compare with the paramecia that have been fed with yeast cells).