Gce Model Questions Vol1 2021 Biology Question 50
Practice objective / multiple choice question 50 from the 2021 Gce Model Questions Vol1 Biology examination.
In a lake ecosystem, primary producers fix \(10\,000\ \text{MJ}\) of solar energy per year. At each trophic transfer, 20 % of the available energy is lost to respiration before the transfer occurs. The transfer efficiencies are: 12 % from producers to primary consumers, 8 % from primary to secondary consumers, and 5 % from secondary to tertiary consumers. Calculate the net amount of energy (in MJ, to two decimal places) that reaches the tertiary consumers each year.
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This is Gce Model Questions Vol1 2021 Biology Question 50. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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