Biological Magnification


 
 
Concept Explanation
 

Biological Magnification

Biological Magnification:

Producers like plants and algae take in nutrients from their surroundings. Sometimes they also take in harmful chemicals along with the other nutrients. These harmful chemicals include compounds of mercury, and chemicals like DDT, which is widely used to kill mosquitoes. These chemicals cannot be broken down by plants and other organisms. So, they accumulate in their bodies. Since organisms at a higher trophic level eat many lower-level organisms, the amount of chemicals entering their bodies increases

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Sample Questions
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Question : 1

The chemical pesticides mix up with soil and water and are absorbed by the growing plants along with water and other minerals . pesticides enter  the food chain at the producer  level and in the process of transfer of food through process of transfer of food through trophic levels, these harmful chemicals gets concentrated at each trophic level.this phenomenon is know as ____________________________

Right Option : C
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Question : 2

The accumulation of non- biodegradable substances at each trophic level is referred as _________________

Right Option : B
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Question : 3

Match column 1 with column 2 and mark the correct option from the codes given below:

Column 1 Column 2
1. Herbivores a. Virus, Bacteria
2. Carnivores b. Bear, Pig
3. Omnivores c. Giraffe, zebra
4. Parasites d. Lion, tiger 

                                                                                                          

Right Option : B
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