Waec Model Questions Vol1 2019 Biology Question 4
Practice objective / multiple choice question 4 from the 2019 Waec Model Questions Vol1 Biology examination.
A lake covering 5 km² has a primary productivity of 1,200 kcal·m⁻²·day⁻¹. Only 10% of this energy is transferred to herbivorous zooplankton, and 20% of the energy they ingest is assimilated into their biomass. A fish species feeds on this zooplankton with a consumption efficiency of 15% and an assimilation efficiency of 25%. (a) Calculate the total amount of energy (in kcal) available to the fish per day under these conditions. (b) If a pollutant reduces primary productivity by 25% and lowers zooplankton assimilation efficiency by 5 percentage points, what is the new daily energy available to the fish?
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About This Question
This is Waec Model Questions Vol1 2019 Biology Question 4. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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