Suppose the water of a lake is contaminated by a pesticide. Arrange the following in the increasing…
Biomagnification raises the concentration of a persistent pesticide at each higher trophic level. It is lowest in the water (A), higher in the phytoplankton producers (C),…
Choose your answer
Suppose the water of a lake is contaminated by a pesticide. Arrange the following in the increasing order of accumulated concentration of the pesticide in the lake ecosystem.
A. Water
B. Zooplankton
C. Phytoplankton
D. Fish
E. Bird
Answer and explanation
Correct answer C
Biomagnification raises the concentration of a persistent pesticide at each higher trophic level. It is lowest in the water (A), higher in the phytoplankton producers (C), higher still in zooplankton (B), then in fish (D) and highest in the fish eating birds (E). Hence A, C, B, D, E.
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