Final answer:
Microbes most similar to plants is not a characteristic of protozoa; they are single-celled eukaryotes more similar to animals and often have structures like flagella or cilia for movement.
Step-by-step explanation:
The characteristic that is not a trait of protozoa is C) microbes most similar to plants. Protozoa are animal-like protists and display characteristics more akin to animals than plants. They are single-celled eukaryotes that can move by means of flagella, cilia, or pseudopodia, and they are heterotrophic, meaning they consume organic material for energy rather than producing it through photosynthesis as plants do. Protozoans do often reproduce asexually, which corresponds to option B) and are known for having structures such as cilia and flagella for movement and feeding, aligning with option E).