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 a objective / multiple choice question from the 2019 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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