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.
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.
Biopesticide is a pesticide which is
a. not chemical in nature
b. more specific in action against the pest
c. safer for environment than chemical pesticides
A popularly known bio-pesticide is Bt toxin, which...
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