Download App

Environmental Issues — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYEnvironmental Issues1 Mark
MCQ
The most common indicator organism which represents polluted water is:
  • ✓
    Escherichia coli.
  • B
    Salmonella typhi.
  • C
    Vibrio cholerae.
  • D
    Entamoeba histolytica.
✓

Answer

Correct option: A.
Escherichia coli.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Environmental Issues→Environmental Issues — all question types→BIOLOGY STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Methyl guanosine triphosphate is added at $5\ '$ end of $\text{hn-RNA}$ in a process of:
→
Which one of the following is the correctly matched pair of an endangered animal and a national park?
→
Allen's rule applies to
→
If mother is a carrier for colour blindness and father is normal, then in the offsprings this disease may be seen in
→
Which one of the following statements about human male reproductive system is wrong?
→
The changes that occurs in female at the onset of puberty are
→
Mark the incorrect statement
→
In man developing embryo remains in
→
The interspecific interaction in which one partner is benefitted and the other is unaffected $($neutral$),$ is called:
→
In mature oocytes cortical granules are formed on which side of plasmalemma
→