Enerfy Transfer and Photosynthesis 3.0 / 5 based on 1 rating ? BiologyA2/A-levelEdexcel Created by: katie watchamCreated on: 18-11-12 15:46 What is the main way energy enters an ecosystem? Photosynthesis 1 of 11 What are plants called in the food chain? Producers 2 of 11 What are each of the stages in the food chain called? Trophic levels 3 of 11 What do food chains and food webs show? Energy transfer between an ecosystem 4 of 11 What recycles the energy locked up in the things that can't be eaten? (e.g bones, faeces, etc.) Decomposers 5 of 11 About how much of the total energy in an organism is transferred to the next trophic level? 90% 6 of 11 What are three ways in which plants can't use all the light energy that reaches their leaves. Wrong wavelength of light, some light is reflected, some light passes straight through the leaves 7 of 11 What is gross primary productivity? The total amount of energy available to producers 8 of 11 What is net primary productivity? The amount of energy from producers that is available to the next trophic levels 9 of 11 How can you work out net primary productivity? Net primary productivity= Gross primary productivity-respiratory loss 10 of 11 How do you calculate the percentage efficiency of energy transfer? (net productivity of a level/net productivity of a previous level) x 100 11 of 11
Essay 22: The transfer of energy between different organisms and between these organisms and their environment 0.0 / 5
Essay 1: The transfer of substances containing carbon between organisms and between organisms and the environment 0.0 / 5
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