Chapter 13 Earth as a System: Energy, Matter, and Life - Part 5
In biological magnification (biomagnification), why do persistent organic pollutants (POPs) like DDT concentrate exponen...
Type: MCQ • Marks: 1
In biological magnification (biomagnification), why do persistent organic pollutants (POPs) like DDT concentrate exponentially at higher trophic levels?
Options
A. POPs evaporate rapidly into the atmosphere
B. Lower trophic organisms actively synthesize POPs
C. Lipid-soluble POPs resist metabolic breakdown and excretion, accumulating within adipose tissues while energy/biomass decreases at each successive trophic step
D. High trophic level animals ingest POPs directly from sunlight
Explanation
Lipophilic toxins persist and concentrate up the food web because predators consume vast quantities of lower-trophic biomass containing accumulated residues.
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