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With reference to the ''Biomagnification", consider the following statements:
It represents an inverted pyramid of transfer of toxic substances.
Non-degradable and fat-soluble pollutants lead to biomagnification.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
With reference to the ''Biomagnification", consider the following sta...
Biomagnification is the process by which the concentration of a toxic substance increases as it moves up the food chain. This process occurs because certain pollutants are non-degradable and fat-soluble, which means they are not easily broken down and can accumulate in the fatty tissues of organisms. Let's examine each statement in detail:
1. It represents an inverted pyramid of transfer of toxic substances.
- This statement is correct. Biomagnification is often depicted as an inverted pyramid because the concentration of toxic substances increases as you move up the food chain. Organisms at higher trophic levels consume a larger number of organisms from lower trophic levels, resulting in the accumulation of toxins in their bodies. This leads to a higher concentration of toxic substances in top predators compared to primary producers.
2. Non-degradable and fat-soluble pollutants lead to biomagnification.
- This statement is also correct. Non-degradable pollutants, such as certain pesticides and industrial chemicals, are not easily broken down by natural processes. They can persist in the environment for a long time and accumulate in the bodies of organisms. Fat-soluble pollutants have the ability to dissolve in fats and oils, which allows them to be stored in the fatty tissues of organisms. When organisms consume other organisms containing these pollutants, they absorb the accumulated toxins, leading to biomagnification.
The correct answer is option 'C' - Both 1 and 2.
In conclusion, biomagnification is a process in which the concentration of toxic substances increases as they move up the food chain. This process is represented by an inverted pyramid, with higher concentrations of toxins in top predators. Non-degradable and fat-soluble pollutants are responsible for biomagnification, as they accumulate in the fatty tissues of organisms and become more concentrated as they are passed along the food chain.
1. It represents an inverted pyramid of transfer of toxic substances.
- This statement is correct. Biomagnification is often depicted as an inverted pyramid because the concentration of toxic substances increases as you move up the food chain. Organisms at higher trophic levels consume a larger number of organisms from lower trophic levels, resulting in the accumulation of toxins in their bodies. This leads to a higher concentration of toxic substances in top predators compared to primary producers.
2. Non-degradable and fat-soluble pollutants lead to biomagnification.
- This statement is also correct. Non-degradable pollutants, such as certain pesticides and industrial chemicals, are not easily broken down by natural processes. They can persist in the environment for a long time and accumulate in the bodies of organisms. Fat-soluble pollutants have the ability to dissolve in fats and oils, which allows them to be stored in the fatty tissues of organisms. When organisms consume other organisms containing these pollutants, they absorb the accumulated toxins, leading to biomagnification.
The correct answer is option 'C' - Both 1 and 2.
In conclusion, biomagnification is a process in which the concentration of toxic substances increases as they move up the food chain. This process is represented by an inverted pyramid, with higher concentrations of toxins in top predators. Non-degradable and fat-soluble pollutants are responsible for biomagnification, as they accumulate in the fatty tissues of organisms and become more concentrated as they are passed along the food chain.
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With reference to the ''Biomagnification", consider the following sta...
- The term Biomagnification means increasing the concentration of various toxic substances along the food chain. Toxic substances at the level of primary producers get concentrated at each trophic level as they move up the food chain. Thus representing an inverted pyramid of transfer of toxic accumulation. Hence statement 1 is correct.
- The phenomenon of concentrated toxic deposition at a higher trophic level is known as bio-accumulation.
- A small amount of toxic constituent which is neither excreted nor metabolised, i.e. it non- degradable and fat-soluble, gets increased as the food chain moves upward from one trophic level to the next and the toxic constituents become concentrated. Hence statement 2 is correct.
- An example of the phenomenon of bio-magnification was first noticed in Illinois (USA) where elm trees were spread with DDT. A large number of birds like robins died near these trees. It was later discovered that these birds perished due to DDT poisoning. The lethal dose came from the earthworms which they consumed. Earthworms had concentrated DDT residue by feeding on fallen elm leaves.
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With reference to the ''Biomagnification", consider the following statements: It represents an inverted pyramid of transfer of toxic substances. Non-degradable and fat-soluble pollutants lead to biomagnification. Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
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