Which one of the following organisms is used as indicator of water quality?
Correct answer: D. Escherichia
- A. Beggiota
- B. Chlorella
- C. Azospirillium
- D. Escherichia
Explanation
Escherichia coli is used as an indicator of faecal contamination and therefore helps assess sanitary water quality. Its presence suggests that disease-causing enteric organisms may also be present.
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