1.

(2012)Common indicator organism of waterpollution is(a) Vibrio cholerae(b) Salmonella typhiEscherichia coli(d) Entamoeba histolytica.(201

Answer»

Indicator bacteria. Certain bacteria can be used as indicator organisms in particular situations. The presence of bacteria commonly found inhumanfeces, termedcoliformbacteria (e.g. E. coli), in surface water is a common indicator offaecalcontamination.

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