In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation technique?
- It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.
- Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.
- Genetic engineering can be used to create microorganisms specifically designed for bioremediation.
Select the correct answer using the code given below:
Detailed Explanation:
Answer: Option 3 — 1 and 3 only
Bioremediation is a pollution control technique that uses living organisms, primarily microorganisms, to degrade or neutralize environmental contaminants by enhancing natural biodegradation processes. While genetic engineering can create specialized microorganisms for targeted bioremediation, heavy metals like cadmium and lead cannot be readily or completely treated through this technique as they are elements that cannot be biodegraded.
✅ Statement 1 – Correct: Bioremediation works by enhancing the natural biodegradation processes that occur in nature, using microorganisms to break down pollutants in soil, water, or other environments.
❌ Statement 2 – Incorrect: Heavy metals like cadmium and lead cannot be readily and completely treated by bioremediation because they are elemental pollutants that cannot be biodegraded, though they may be transformed or immobilized.
✅ Statement 3 – Correct: Genetic engineering techniques can be used to design microorganisms with enhanced or specific capabilities to target particular contaminants for more effective bioremediation.
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