What characteristic is seen in the zooflagellates that live in lakes and streams?

Answer 1

Flagellates are single-celled protists with one or more flagella, whip-like organelles often used for propulsion. The flagella is used for movement through the liquid.

Flagellates are protozoa that are found in the group Mastigophora. Some types of flagellates commonly found in wastewater are Euglena, Trigonomonas, and Monas. Recently flagellates were divided into additional categories-plant-like Phytomastigophora and Zoomastigophora.

Like their relatives the amoebae, flagellates are usually present when there are large amounts of soluble food available (high F:M or high BOD). They are found during start up when the sludge is young or after an upset, but will quickly predominate over the amoebae because they are more efficient feeders. They are often found in trickling filter, oxidation ponds, lagoons and activated sludge. Flagellates may have one or two flagella or whips for locomotion. Flagellates can be color-less or green.

Hope you find what your looking for