Question

useful effects of protozoa in points​

Answer 1

Useful protozoans:

1. Protozoans serve as food for many small aquatic organisms. Zooplankton are tiny protozoans which live in the sea. They form the principal diet of blue whales, who gulp them in with sea water.

2. They are the ultimate decomposers in nature, as they feed on bacteria and fungi, which decompose dead organic matter. They are, thus, useful in the treatment of sewage.

Answer 2

Answer:

some Protozoa cause disease the Protozoa any endamoeba histalytica causes of amoebiasis in human beings