In a lake contaminated with pesticides, which one of the following organism living in the lake will contain the maximum amount of pesticide?
Small fish, zooplankton, big fish, phytoplankton.
Answer:
The concentration of pesticide will increase with the rise of trophic level in the food chain.
Phytoplankton —> Zooplankton —> Small fish
—> Big fish (maximum pesticide)
Therefore, big fishes will have maximum amount of pesticides.