Producers transfer only about 1% of the light energy that reaches them into new biomass. Which statement best explains why this percentage is so low?
Much of the light is reflected, misses the chloroplasts or is the wrong wavelength.
Much of the glucose made in photosynthesis is used up again in respiration.
Much of the light energy is transferred to the primary consumers instead.
Much of the light energy is used to evaporate water from the leaves.
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.