Paramecium
Paramecium has a primitive mouth (called an oral groove) to ingest food and an anal pore to excrete it. Contractile vacuoles allow the organism to excrete excess water. Cilia enable the organism to move.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Groups of Protists. October 16, 2013."
http://cnx.org/content/m44617/latest/Figure_23_03_06ab.jpg
OpenStax CNX
CC BY 3.0.
