Trophic Levels (Cambridge (CIE) IGCSE Co-ordinated Sciences (Double Award)): Revision Note

Trophic Levels: Extended

Extended Tier Only

• A trophic level is the position of an organism in a food chain or food web

• Examples of trophic levels include:

  • Producers are the first trophic level in all food chains

  • Primary consumers are at the second trophic level

  • Secondary consumers are at the third trophic level

  • Tertiary consumers are at the fourth trophic level

  • Quaternary consumers are at the fifth trophic level

Trophic levels describe the position of organisms in a food chain