Salt-marsh plants are producers. During a period, 3.6 × 108 kJ of light energy reaches the plants.
Each kilogram of new plant biomass stores 18 000 kJ of energy.
Primary consumers feed on the plants.
Calculate the mass of new plant biomass expected to be passed to the primary consumers.
Use the typical proportions for energy transfer by producers and biomass transfer between trophic levels.
Give your answer in kg.
103 exam-style questions on AQA GCSE Biology 7.4 Trophic levels in an ecosystem, covering 7.4.1 Trophic levels, 7.4.2 Pyramids of biomass, and 7.4.3 Transfer of biomass. Each one has a worked solution and a mark scheme showing where the marks go.