Common indicator organism of water pollution is:
Correct answer: B. Escherichia coli
- A. Eichhornia crassipes
- B. Escherichia coli
- C. Entamoeba histolytica
- D. Lemna pancicostata
Explanation
Escherichia coli is used as an indicator of faecal contamination because it normally occurs in the intestines of humans and other warm-blooded animals. The other organisms listed are aquatic plants or pathogens, not the standard indicator organism.
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