Bioremediation Pollution Technology
Question
In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation technique?
Select the correct answer using the code given below:
- 1.
It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.
- 2.
Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.
- 3.
Genetic engineering can be used to create microorganisms specifically designed for bioremediation.
Options
1 only
2 and 3 only
1 and 3 only
1, 2 and 3
Explanation
Statement 1 is correct: Bioremediation is a technique that enhances natural biodegradation processes by using microorganisms to break down or remove pollutants. Statement 2 is incorrect: Heavy metals like cadmium and lead cannot be readily and completely treated by bioremediation because microorganisms cannot degrade inorganic substances; they can only immobilize or sequester them. Bioremediation works best for organic pollutants. Statement 3 is correct: Genetic engineering can be used to create genetically modified microorganisms with enhanced capabilities for breaking down specific pollutants. Statements 1 and 3 are correct. > Bioremediation: Works for organic pollutants via enhanced natural biodegradation; GM microorganisms enhance effectiveness; does not work well for heavy metals (inorganic). Answer: (c).
Question details
Year
2017
Paper
GS Paper 1
Question
Q14
Subject
Environment
Sub-topic
Pollution Control Techniques
Type
Statement-based
Difficulty
Medium
Nature
Static
Source hint
NCERT Environmental Science
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