Question

Biological magnification refers to

• A. Increase in the concentration of insecticide in animals
• B. Increase in the concentration of organophosphate in plants
• C. Decrease in the concentration of insecticide in animals
  
• D. Increase in the number of animals and plants in ecosystem

Answer 1

The correct option is A Increase in the concentration of insecticide in animals

Biomagnification is the accumulation or increasing concentration of lipophilic pesticides in the top members of the food chain. During biomagnification, the concentration of non-degradable pesticide like DDT goes on increasing along the food chain and highest values occur in the consumers of the top trophic level. So, the value of pesticide will go on increasing at each trophic level.

Thus, the correct answer is option A.