Amoeba and paramecium belong to the domain Eukarya and the kingdom Protista.
The classification of these organisms can be understood through their cellular structure. Both amoeba and paramecium are eukaryotic, meaning their cells contain a nucleus and other membrane-bound organelles, which distinguishes them from prokaryotic organisms like bacteria.
In the kingdom Protista, these organisms are classified as protozoans. Protozoans are primarily unicellular and exhibit various forms of locomotion and nutrition. For example, amoeba moves using pseudopodia (temporary projections of the cell), while paramecium uses cilia (tiny hair-like structures) for movement. Both are significant in their respective ecosystems, serving roles in nutrient cycling and as indicators of environmental health.