Protozoa are unicellular eukaryotes. As in all eukaryotes, the nucleus is enclosed in a membrane. ... The organelles of protozoa have functions similar to the organs of higher animals. The plasma membrane enclosing the cytoplasm also covers the projecting locomotory structures such as pseudopodia, cilia, and flagella
According to the research, the structures common to all protozoa are a group of cells that are identical to each other.
They are unicellular organisms whose entire body is a single cell, endowed with organelles and diverse structures, which fulfill nutritional, mobile, etc. functions.
The common thing is that protozoa are unicellular organisms of the eukaryotic type that develop in water.
Therefore, we can conclude that according to the research, the structures common to all protozoa are a group of cells that are identical to each other.
Learn more about protozoa here: https://brainly.com/question/2937170
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