2. Sample Papers
  3. SSC
  4. Ecology And Environment

SSC Ecology And Environment Sample Paper NCERT Sample Paper-3

  • question_answer
    Which of the following organisms is used as an indicator of water quality?

    A)  Baggiota          

    B)  Chiorella

    C)  Azospirillum     

    D)  Escherichia

    Correct Answer: D

    Solution :

    [d] The number of bacteria as Escherichia coli in unit volume of water called 'Escherichia coli index' is taken as a parameter of water pollution. The presence of large number of E. coli shows the pollution level of water.


You need to login to perform this action.
You will be redirected in 3 sec spinner