Question

Define Biomagnification??

Long answer should be in 100 words...

Quality Answer needed​

Answer 1

Answer:

$\boxed{ \red{ \huge{Biomagnification}}}$

It refers to accumulation of toxic substances in the bodies of animals located in successively higher trophic levels.

A classic example of biomagnification is :

• Heavy metal poisoning
• Environmental pollutants

These non-degradable substances are deposited in the tolerant tissues of animals in the higher levels especially the higher carnivores, omnivores , etc

For example :

In any food chain , the grasses are eaten by herbivores , which in turn are eaten by carnivores and so on.

So as we move towards the higher Trophic levels , the carnivores take more number of herbivores to satisfy their Energy needs.

As a result , more amount of toxin from the previous trophic level is getting accumulated in the higher trophic levels.

Biomagnification is also known as

• Bioamplification.
• Biological Magnification

Biomagnification occurs based on 3 reasons :

• Non - degradable property of the accumulating substance.
• Tolerability of the animals of higher Trophic level.
• Low internal degradation due to water insoluble nature of the substances.

I have attached a photo given in NCERT class 11 Biology representing Biomagnification .

Answer 2

${\huge{\underline{\boxed{\mathfrak{\fcolorbox{red}{yellow}{Definition}}}}}}$

Biomagnification is defined as the accumulation of a particular substance in the body of the organisms at different trophic levels of a food chain. The increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food.

${\huge{\underline{\boxed{\mathfrak{\fcolorbox{</strong><strong>r</strong><strong>e</strong><strong>d</strong><strong>}{</strong><strong>y</strong><strong>e</strong><strong>l</strong><strong>l</strong><strong>o</strong><strong>w</strong><strong>}{</strong><strong>E</strong><strong>x</strong><strong>a</strong><strong>m</strong><strong>p</strong><strong>l</strong><strong>e</strong><strong>:</strong><strong>-</strong><strong>}}}}}}$

example of biomagnification is in predator fish. Species like Shark, Swordfish, Orange Roughy, Tuna, King Mackerel, or Tilefish contain proportionally larger levels of toxic mercury than smaller fish and shellfish.

${\huge{\underline{\boxed{\mathfrak{\fcolorbox{</strong><strong>r</strong><strong>e</strong><strong>d</strong><strong>}{</strong><strong>yellow</strong><strong>}{</strong><strong>Effects</strong><strong> </strong><strong>:</strong><strong> </strong><strong>-</strong><strong>}}}}}}$

Humans become more susceptible to cancers, liver and kidney failure, respiratory disorders, birth defects in pregnant women, brain damage, and heart diseases are a result of mercury, cadmium, lead, cobalt, chromium and other chemical poisoning.

${\huge{\underline{\boxed{\mathfrak{\fcolorbox{</strong><strong>r</strong><strong>e</strong><strong>d</strong><strong>}{</strong><strong>yellow</strong><strong>}{</strong><strong>p</strong><strong>o</strong><strong>i</strong><strong>n</strong><strong>t</strong><strong>s</strong><strong> </strong><strong>:</strong><strong> </strong><strong>-</strong><strong>}}}}}}$

• Biomagnification is the build up of toxins in a food chain.

• The DDT concentration is in parts per million.

• As the trophic level increases in a food chain, the amount of toxic build up increases.

• The x's represent the amount of toxic build up accumulating as the trophic level increases