Viruses, Bacteria, Protists, and Fungi

Which protist is an indicator of polluted water?

Euglenoids are unicellular flagellates; many euglenoids are capable of photosynthesis and are autotrophic. They are commonly found in freshwater ponds and puddles. Others do not carry on photosynthesis and are heterotrophic, often found in water with large amounts of organic material. Euglenoids frequently serve as bioindicators and are found in large numbers in polluted waters.


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