Neco Model Questions Vol1 2017 Biology Question 35

In a lake ecosystem the incident solar energy is \(1200\ \text{kcal\,m}^{-2}\text{day}^{-1}\). Only 10 % is converted into phytoplankton biomass (gross primary productivity). Herbivorous zooplankton consume 30 % of this biomass. Of the energy assimilated by zooplankton, 20 % is used for respiration and the remainder is transferred to secondary consumers (fish). Fish convert the assimilated energy to their own biomass with an efficiency of 15 %. A pollutant increases the proportion of assimilated energy that zooplankton use for respiration to 30 % (all other parameters stay the same). Calculate the amount of energy (in kcal\,m\(^{-2}\)\,day\(^{-1}\)) that is transferred to fish biomass per day after the pollutant effect (round to two decimal places).