Neco Model Questions Vol1 2020 Biology Question 12
Practice objective / multiple choice question 12 from the 2020 Neco Model Questions Vol1 Biology examination.
Two freshwater ecosystems, A and B, each have a primary‑producer biomass of 5 000 kg. In ecosystem A the energy‑transfer efficiencies are: producer → primary consumer 10 %, primary → secondary 15 %, secondary → top predator 5 %. The observed top‑predator biomass in A is 30 kg.\nIn ecosystem B the efficiencies are: producer → primary consumer 12 %, primary → secondary 10 %, secondary → top predator 4 %. The observed top‑predator biomass in B is 20 kg.\n(a) Calculate the biomass of the primary‑consumer level in ecosystem B.\n(b) Which ecosystem has the greater secondary‑consumer biomass?
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This is Neco Model Questions Vol1 2020 Biology Question 12. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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