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After the conventional sedimentation, fi...

After the conventional sedimentation, filtering and chlorine treatment, lots of dangerous pollutants still remain. To combat this, the biologists developed a series of six connected marshes where appropriate plants, algae, fungi and bacteria were seeded into this area, which
(A) Neutralise the pollutants
(B)Absorb the pollutants
(C) Assimilate the pollutants

A

All are correct

B

All are wrong

C

All are correct except B

D

All are correct except

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the role of plants, algae, fungi, and bacteria in the marshes developed by biologists to combat dangerous pollutants, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Context**: The question states that after conventional methods like sedimentation, filtering, and chlorine treatment, dangerous pollutants still remain in the water. This indicates that additional methods are needed to effectively remove or neutralize these pollutants. **Hint**: Focus on the effectiveness of conventional water treatment methods and their limitations. 2. **Introduction of Marshes**: Biologists have developed a series of six connected marshes. This indicates a natural approach to water purification, utilizing the ecosystem's natural processes. **Hint**: Think about how ecosystems can contribute to cleaning water naturally. 3. **Role of Organisms**: The marshes are seeded with appropriate plants, algae, fungi, and bacteria. Each of these organisms plays a role in the bioremediation process, which is the use of living organisms to remove or neutralize contaminants from the environment. **Hint**: Consider the functions of different organisms in an ecosystem and their interactions with pollutants. 4. **Neutralization, Absorption, and Assimilation**: The question presents three options: (A) Neutralise the pollutants, (B) Absorb the pollutants, and (C) Assimilate the pollutants. In the context of bioremediation: - **Neutralization** refers to the chemical alteration of pollutants to render them harmless. - **Absorption** involves the uptake of pollutants by the organisms, effectively removing them from the water. - **Assimilation** means that the organisms incorporate the pollutants into their own biological processes, converting them into less harmful substances. **Hint**: Analyze how each term relates to the process of cleaning pollutants in water. 5. **Conclusion**: Given that the marshes are designed to purify water naturally, the correct answer would encompass all three functions. However, the most fitting answer in the context of the question is that these organisms primarily **absorb** and **assimilate** the pollutants, as they actively take in and process these harmful substances. **Hint**: Consider which term best describes the primary action of the organisms in the marshes. ### Final Answer: The correct option is (B) Absorb the pollutants, as the organisms in the marshes primarily take in the pollutants from the water, contributing to its natural purification.
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