Name the process in which a harmful chemical enters the food chain and gets concentrated at each level in the food chain. a)concentrationb)biomagnification c)expansion d)pollutionCorrect answer is option 'B'. Can you explain this answer?

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Answer

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Biomagnification

is the increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain

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Increasing concentration of harmful chemicals like DDT to every level of the food chain is known as 'Biomagnigication'.

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Correct answer is B  Biomagnification is the process by which the harmful Chemical enters the food chain and gets concentrated at each level of food chain-

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With increase in each tropic level toxicity of chemical increases as in DDT

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Its biomagnification clear from its definition...

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Process of Biomagnification in the Food Chain:
Biomagnification:
Biomagnification refers to the process through which a harmful chemical or toxin enters the food chain and becomes increasingly concentrated as it moves up the food chain. This phenomenon occurs because the concentration of the chemical or toxin increases at each successive trophic level.
Explanation:
Biomagnification occurs due to the following steps:
1. Introduction of the Chemical:
- Initially, a harmful chemical or toxin is introduced into the environment through various sources such as industrial waste, agricultural runoff, or pollution.
2. Accumulation in Producers:
- The chemical is absorbed by plants or algae, which are the primary producers in the food chain. These organisms take in the chemical through their roots or during photosynthesis.
3. Ingestion by Herbivores:
- Herbivores, such as small fish or insects, consume the contaminated plants or algae. They absorb the chemical into their bodies while feeding.
4. Transfer to Carnivores:
- The contaminated herbivores are then consumed by carnivores, such as larger fish or birds. At this stage, the concentration of the chemical increases because the carnivores consume multiple contaminated herbivores.
5. Further Transfer to Higher-Level Consumers:
- The process continues as the higher-level consumers, such as top predators or humans, consume the contaminated carnivores. With each level of consumption, the concentration of the chemical increases.
6. Concentration Increase:
- As the chemical moves up the food chain, it gets concentrated because it is not easily metabolized or excreted by organisms. This concentration increase is due to the cumulative effect of consuming contaminated organisms at each trophic level.
7. Impact on Organisms:
- The increasing concentration of the harmful chemical in organisms can have detrimental effects on their health. It can lead to bioaccumulation, where the chemical accumulates in the tissues and organs of organisms, potentially causing toxic effects and disrupting their physiological processes.
8. Human Health Concerns:
- Biomagnification is of particular concern for humans as they often occupy the highest trophic level in many food chains. Consuming contaminated organisms can lead to the ingestion of high levels of harmful chemicals, which can have adverse health effects.
Conclusion:
Biomagnification is a process in which a harmful chemical enters the food chain and becomes increasingly concentrated at each trophic level. It highlights the potential risks associated with the accumulation of toxins and chemicals in the environment and emphasizes the need for proper management of pollutants to safeguard ecosystem health and human well-being.

Answer

Explanation:

Biomagnification:

- Biomagnification is the process in which a harmful chemical enters the food chain and gets concentrated at each level in the food chain.
- This process occurs when a pollutant, such as a pesticide or heavy metal, is introduced into the environment.
- The pollutant is absorbed by plants or algae at the bottom of the food chain.
- When herbivores consume these plants, they absorb the pollutant.
- As carnivores consume herbivores, the pollutant becomes more concentrated in their bodies since they are getting a dose from every organism they eat.
- This results in the highest concentration of the pollutant being found in the top predators of the food chain.
- Biomagnification can have serious consequences for the organisms at the top of the food chain, as they are exposed to high levels of harmful chemicals.

In conclusion, biomagnification is a significant environmental issue that highlights the interconnectedness of different organisms in the food chain and the potential risks associated with the accumulation of pollutants.

Similar Class 10 Doubts

Name the process in which a harmful chemical enters the food chain and gets concentrated at each tropic level?

What phenomenon describes the progressive accumulation of harmful chemicals in organisms at each trophic level?

Harmful chemicals accumulate progressively at each trophic level. Since man is at the apex of all the food chains, the concentration of harmful chemicals may be more in human beings. The phenomenon involved is known as biomagnification.

You are given 3 solutions A,B and C with pH values 2 , 8 and 13 respectively. Which solution has more hydrogen ion concentrated among three and state the nature of each solution?

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