Question

The presence of which microorganism in the river Ganga indicates contamination?

• A. Lactobacillus bacteria
• B. Amoeba
• C. Coliform bacteria
• D. Mucor spores

Answer 1

The correct option is C

Coliform bacteria

The correct answer is option C.

Explanation of the correct option:

1. Coliform is a group of bacteria found in the human intestines.
2. Coliform bacteria are the essential indicators of water pollution.
3. The presence of Coliform bacteria indicates contamination of water bodies with the feces of humans or animals and other pollutants.
4. The total number of Coliform bacteria is used to test the quality of water.

Final answer: Hence, the presence of Coliform bacteria in the river Ganga indicates contamination.