Quick Answer: How Does Biological Magnification Occur?

Biomagnification occurs when the concentration of a pollutant increases from one link in the food chain to another (i.e. polluted fish will contaminate the next consumer and continues up a tropic food web as each level consumes another) and will result in the top predator containing the highest concentration levels.

What is biological magnification How does it occur?

Biomagnification occurs when slightly larger organisms called zooplankton feed upon the contaminated phytoplankton and in turn absorb POPs into their own tissues at a higher concentration. The more contaminated phytoplankton a zooplankton eats, the more pollutants it will have in its body.

How does biological magnification occur Class 10?

Ans. Biological magnification is the process of gathering various non-essential and at times, dangerous substances by organisms at different levels of a food chain. Furthermore, it occurs when an organism of a food chain consumes any toxic substance.

Which is the major cause of biomagnification?

The major causes of biomagnification are: – The agricultural pesticides, insecticides, fertilizers, and fungicides are very toxic and are released into the soil, rivers, lakes, and seas. These cause health issues in aquatic organisms and humans.

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How does bioaccumulation and biomagnification occur?

Bioaccumulation takes place in a single organism over the span of its life, resulting in a higher concentration in older individuals. Biomagnification takes place as chemicals transfer from lower trophic levels to higher trophic levels within a food web, resulting in a higher concentration in apex predators.

Why does biological magnification occur quizlet?

Why does biological magnification occur? As the amount of organic material decreases with increasing trophic level, the amount of toxin also decreases. As the amount of organic material increases with increasing trophic level, the amount of toxin also increases.

What is biological magnification explain with an example?

Biological magnification refers to the process where toxic substances move up the food chain and become more concentrated at each level. An example of biological magnification and its dangers is any small fish that eats plankton that has been tainted with mercury.

What is biology biological magnification?

Biological magnification, or biomagnification, is the increasing buildup of toxic substances within organisms that happens at each stage of the food chain. The buildup of toxic substances within a single organism is called biological accumulation.

What is biological magnification Class 10 CBSE?

Biological magnification is a phenomenon that expalins the increase in the concentration of harmful chemicals like pesticides and fertilisers in each trophic level. As these chemicals are not degradable, the organisms in soil and water can accumulate them in their bodies.

What is biological magnification class 12th?

Complete answer: Biomagnification or biological magnification is a gradual increase in the concentration of toxicants at successive trophic levels. This happens because a toxic substance accumulated is not metabolised or excreted by the organism and is passed on to the next higher trophic level.

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What is biomagnification responsible?

Substances responsible for biomagnification Pesticides: The pesticides and chemicals such as DDT and mercury released into the lakes and rivers are ingested by the aquatic organisms. Since the pesticides are industrially processed they contain traces of heavy metals such as lead, arsenic, cadmium, etc.

Why is biological magnification a problem?

Because humans are at the top of the food chain, biomagnification is of serious concern. Humans who are affected by biomagnification tend to have a higher risk of developing certain cancers, liver failure, birth defects, brain damage, and heart disease.

What is biological magnification answer key?

Answer: BIOLOGICAL MAGNIFICATION OR BIOMAGNIFICATION IS DEFINED AS THE INCREASE IN THE CONCENTRATION OF THE TOXICANTS AT SUCCESSIVE TROPHIC LEVELS. Actually, the toxic substances can neither be excreted nor metabolised, hence, they get accumulated in an organism and thus, are passed on to higher trophic levels.

Can biomagnification occur without bioaccumulation?

We already know that both require a chemical to enter into living organisms and both require that the chemical is a toxic one. Any chemical that sits still will not make its way into the body of an organism and therefore will not cause bioaccumulation or biomagnification.

Does bioaccumulation always lead to biomagnification?

Fortunately, bioaccumulation does not always result in biomagnification. Bioaccumulation is a normal and essential process for the growth and nurturing of organisms. Bioaccumulation begins when a chemical passes from the environment into an organism’s cells.

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