Waec Model Questions Vol1 2018 Biology Question 6
Practice objective / multiple choice question 6 from the 2018 Waec Model Questions Vol1 Biology examination.
In a lake ecosystem there are four trophic levels: phytoplankton (primary producers), zooplankton (primary consumers), small fish (secondary consumers) and a top‑predator fish (tertiary consumer). The ecological efficiency between each successive level is 12%. If the total biomass of the top‑predator fish population is 250 kg and the system is in steady state, what is the minimum total biomass of phytoplankton required to support this top‑predator population? Give your answer in kilograms, rounded to the nearest kilogram.
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About This Question
This is Waec Model Questions Vol1 2018 Biology Question 6. It is a objective / multiple choice question from the 2018 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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