Foods high in potassium include potatoes, spinach, beans, lentils, fish, pork, yogurt, bananas, oranges, prunes, peaches and apricots. Tomato products -- in particular, tomato paste and tomato sauce -- are rich in potassium as well.
Historically, protozoa were defined as single-celled organisms with animal-like behaviors, such as motility and predation. The group was regarded as the zoological counterpart to the  protophyta , which were considered to be plant-like, as they are capable of photosynthesis.The terms protozoa and protozoans are also used informally to designate single-celled, non-photosynthetic protists, such as ciliates, amoebae and flagellates.amiliar examples of protists with a pellicle are the euglenoids and the ciliate Paramecium. In some protozoa, the pellicle hosts epibiotic bacteria that adhere to the surface by their fimbriae or attachment pili .
In several classification systems proposed by Thomas Cavalier-Smith and his collaborators since 1981, Protozoa is ranked as a kingdom. The seven-kingdom scheme proposed by Ruggiero et al. in 2015, places seven phyla under Protozoa: Euglenozoa, Amoebozoa, Choanozoa, Loukozoa, Percolozoa, Microsporidia and Sulcozoa.he word protozoa (singular protozoon, or protozoan) was coined in 1818, by zoologist Georg August Goldfuss, as the Greek equivalent of the German Urthiere, meaning primitive, or original animals. Goldfuss erected Protozoa as a class containing what he believed to be the simplest animals.