Gce Model Questions Vol1 2019 Biology Question 2
Practice objective / multiple choice question 2 from the 2019 Gce Model Questions Vol1 Biology examination.
In a grassland ecosystem the measured gross primary productivity (GPP) is \(1500\ \text{g C m}^{-2}\text{ yr}^{-1}\). Autotrophic respiration consumes \(60\%\) of GPP. Herbivores eat \(30\%\) of the net primary production (NPP). The remaining organic matter is decomposed, and \(80\%\) of that remainder is returned to the atmosphere as CO\(_2\) by heterotrophic respiration. Calculate (a) the percentage of the original GPP that is transferred to herbivores and (b) the percentage of the original GPP that is ultimately released to the atmosphere as CO\(_2\) (including both autotrophic and heterotrophic respiration).
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This is Gce Model Questions Vol1 2019 Biology Question 2. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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