Discussion
Role of eukaryotic and prokaryotic organisms is been utilized in the oxidation pond method for treatment of clarified sewage. These organisms are :
Answer: A
The organisms in an oxidation pond are Bacteria and Algae.
An oxidation (stabilisation) pond works by a partnership. Bacteria, which are prokaryotes, break down the organic matter of the sewage, releasing carbon dioxide, ammonia and phosphate. Algae, which are eukaryotes, use those nutrients and sunlight for photosynthesis and release oxygen, which the bacteria need to keep oxidising the waste.
The other pairs have no prokaryote at all: mushrooms are fungi, mosses are plants, and lichens are fungus-alga partnerships. None of them is the working population of a sewage pond.
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