Question

............. is NOT an indigenous microbe used for bioremediation.

• A. Pseudomonas aeruginosa
• B. Piscirickettsia salmonis
• C. Phanerochaete sordida
• D. E. coli

Hint:

Bioremediation relies on microorganisms like bacteria and fungi to break down pollutants. However, not all microbes are involved in bioremediation; some are pathogenic and unrelated to this process.

Answer 1

The Correct Option is B

Bioremediation involves the use of microorganisms to degrade environmental pollutants. Let's analyze each option:
(1) Pseudomonas aeruginosa: Pseudomonas aeruginosa is widely used in bioremediation due to its ability to break down various pollutants, including hydrocarbons. Hence, it is an indigenous microbe used for bioremediation.
(2) Piscirickettsia salmonis: Piscirickettsia salmonis is a pathogenic bacterium that affects fish and is not used for bioremediation. Therefore, this is the correct answer as it is not an indigenous microbe used in bioremediation.
(3) Phanerochaete sordida: Phanerochaete sordida is a white-rot fungus used in bioremediation to degrade environmental pollutants, particularly lignin. It is an indigenous microbe used for bioremediation.
(4) E. coli: E. coli is a widely studied bacterium that has been used in certain bioremediation processes, including the breakdown of toxic substances. Hence, it is also used for bioremediation.
Conclusion: The correct answer is Option 2: Piscirickettsia salmonis as it is not an indigenous microbe used in bioremediation.