The most common indicator organism that
represents polluted water is
(a) E. coli
(b) Pseudomonas. typhi
(c) Chlorella
(d) Entamoeba
Answers
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Answer:
chlorella is right answer
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The correct option is option a) E. coli.
Explanation:
- These group of bacteria ( Escherichia coli) is found in the guts of many mammals including human beings.
- So, the presence of this bacteria in the water body indicates the contamination of water by faecal matter.
- It's presence also indicates that there may be various other pathogens in the water and the water is not suitable for consumption.
- Although, it is the most common biological indicator used for checking water pollution, it is not the sole indicator of such pollution.
- Other pathogens, ane dissolved heavy metal ions are some of the most common pollutants present in the water.
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