GCSE Biology – Trophic levels

Last updated: 04/05/2020
Edexcel International GCSE Science – Combined science foundation Ecology and the Environment GCSE Biology – Trophic levels

Learning Objectives

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  1. Current
  2. Review
  3. Answered

  1. What is a decomposer?

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  2. What is a detritivore?

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  3. What is an apex predator?

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  4. What is detritus?

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  5. What is a food web?

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  6. What do food webs show?

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  7. What would happen if an organism was taken out of a food web?

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  8. What is each rank in a food chain called?

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  9. How long are most food chains?

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  10. What is a trophic level?

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  11. What type of organism is at tropic level 1 of a pyramid of biomass?

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  12. What type of organism is at tropic level 2 of a pyramid of biomass?

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  13. What trophic level is a producer?

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  14. What trophic level is a primary consumer?

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  15. What trophic level is a secondary consumer?

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  16. What trophic level is a tertiary consumer?

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  17. Which type of organism has the highest trophic level?

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  18. Why are most food chains only 4-5 trophic levels?

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  19. What is a pyramid of numbers?

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  20. Where does each trophic level go on a pyramid of numbers?

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  21. Why are pyramids of numbers not that useful?

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  22. What is a better diagram than a pyramid of numbers?

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  23. What is biomass?

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  24. What do pyramids of biomass show?

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  25. Why do we use dry biomass?

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