The food vacuoles are used to enclose food particles for digestion while the contractile vacuoles are used to expel excess water. Phylum Rhizopoda Amoeba's lack cell walls. They are identified by their pseudopodia. Pseudopodia are false feet which use the same contractile proteins that are in muscles. The pseudopodia are also used for locomotion and gathering food.
Amoebas lack flagella, and they reproduce asexually.
Some amoebas are parasitic. A common disease caused by amoebas is amoebic dysentery. It causes diarrhea. Amoeba Phylum Ciliophora Paramecium Paramecium are a freshwater genus that is free-living. They reproduce by conjugation.