The term "bio-magnification" refers to the

Growth of organism due to food consumption.

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Increase in population size.

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Blowing up of environmental issues by man

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Increase in the concentration of non-degradable pollutants as they pass through food chain.

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Decrease in population size.

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Solution

The correct option is D Increase in the concentration of non-degradable pollutants as they pass through food chain.
The biotic components of an ecosystem are arranged in several trophic levels which are interdependent on each other. The energy produced at one level is passed to another level. Biomagnification refers to increase in concentration of the toxicant at successive trophic levels. This happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level. This phenomenon is well known for mercury and DDT.

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Similar questions

Ever increasing consumption of food articles by world population is pushing up the world food prices beyond expectations.

Q50 With reference to food chains in ecosystems, consider the following statements:

i) A food chain illustrates the order in which a chain of organisms feed upon each other.

ii) Food chains are found within the population of a species.

iii) A food chain illustrates the numbers of each organism which are eaten by others.

Which of the statements given above is / are correct?

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