Biomagnification occurs when toxin concentration increases at higher trophic levels.

Biomagnification occurs when toxin concentration increases at higher trophic levels.

• A. True
• B. False
• C. Only occurs in plants
• D. Only occurs with organic pollutants

Answer: (A)

Biomagnification is the process by which contaminant concentrations get higher as you move up the food chain. When organisms accumulate toxins in their bodies and those toxins are not easily excreted, predators eat many contaminated prey and retain most of what they ingest. With each trophic step, the amount stored in the predator’s tissues accumulates, so top predators end up with much higher levels than the organisms at the bottom. This is why toxins can become extremely concentrated in apex consumers, leading to potential health risks for wildlife and humans who rely on those high-level predators for food. Although many well-known examples involve organic, fat-loving pollutants like DDT or PCBs, the idea isn’t limited to organic substances; persistence and limited excretion can drive biomagnification for various contaminants. The statement in question is true, not limited to plants, and not restricted to organic pollutants.

Biomagnification is the process by which contaminant concentrations get higher as you move up the food chain. When organisms accumulate toxins in their bodies and those toxins are not easily excreted, predators eat many contaminated prey and retain most of what they ingest. With each trophic step, the amount stored in the predator’s tissues accumulates, so top predators end up with much higher levels than the organisms at the bottom. This is why toxins can become extremely concentrated in apex consumers, leading to potential health risks for wildlife and humans who rely on those high-level predators for food.

Although many well-known examples involve organic, fat-loving pollutants like DDT or PCBs, the idea isn’t limited to organic substances; persistence and limited excretion can drive biomagnification for various contaminants. The statement in question is true, not limited to plants, and not restricted to organic pollutants.