NEET 2004 Biology question

Common indicator organism of water pollution is :-

(1)Eichhornia crassipes
(2)Escherichia coliCorrect
(3)Entamoeba histolytica
(4)Lemna pancicostata

Answer: (2)

Solution

Escherichia coli, a coliform bacterium that normally lives in the human intestine, is the standard indicator organism of water pollution; its presence (coliform count) shows faecal contamination by sewage. Eichhornia (water hyacinth) is a weed

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Question ID VK-089530