Ecosystem
Structure and function, energy flow, nutrient cycling, productivity, ecological pyramids.
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Take a full mock →Q1 · Ecosystem · EASY
In an ecosystem, the amount of energy available at each trophic level decreases as we move from producers to top carnivores. What percentage of energy is typically transferred from one trophic level to the next according to the 10% law?
Q2 · Ecosystem · MEDIUM
Which of the following ecological pyramids can never be inverted in any natural ecosystem?
Q3 · Ecosystem · MEDIUM
In a grassland ecosystem, the net primary productivity (NPP) is 2000 kcal/m²/year and the gross primary productivity (GPP) is 3000 kcal/m²/year. What is the respiratory loss (R) by the producers?
Q4 · Ecosystem · EASY
During nutrient cycling in an ecosystem, which of the following statements correctly describes the phosphorus cycle?
Q5 · Ecosystem · HARD
In a pond ecosystem, the standing crop of phytoplankton is 50 g/m² and that of zooplankton is 80 g/m². The pyramid of biomass is inverted. If the phytoplankton has a turnover time of 10 days and the zooplankton has a turnover time of 60 days, what can be concluded about productivity?