NEET Biology question

Not in NEET syllabus

Which one of the following organisms is used as an indicator of water quality? **[AIPMT 1998]**

(A)*Azospirillum*
(B)*Escherichia*Correct
(C)*Biggiata*
(D)*Chlorella*

Answer: (B)

Solution

*Escherichia coli*, a bacterium normally present in the intestines of warm-blooded animals, is the standard indicator organism used to assess faecal/sewage contamination and hence overall water quality.

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Question ID VK-130199