9700/13 Biology May Jun 2024 Online Test | Cambridge AS and A Level MCQ

The diagram shows a tropical ocean food chain with 10 % efficiency of energy transfer between trophic levels.
phytoplankton $ \to $ herbivorous zooplankton $ \to $ carnivorous zooplankton $ \to $ small fish $ \to $ tuna Net primary production of phytoplankton is $1300g\,{m^{ - 3}}\,y{r^{ - 1}}$.
What is the net primary production per year for the carnivorous zooplankton and…