What is the biological phenomenon where non-biodegradable pesticides accumulate in progressively higher concentrations at successive trophic levels?
Answer and explanation
Correct answer: C. Biological magnification
- Step 1: Non-biodegradable toxic substances (such as DDT) cannot be metabolized or excreted by organisms.
- Step 2: As they pass up the food chain, their concentration per unit biomass increases at each progressive trophic level, reaching maximum in apex carnivores.
Answer
Biological magnification.
Why not the others: Eutrophication is nutrient enrichment leading to algal blooms and oxygen depletion in water; bioremediation is the use of microbes to clean pollutants.
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