Trophic levels in an ecosystem (biology only) exam tips

Exam tips

• Pyramids of biomass exam tip 1

  Use precise biological vocabulary when you explain how to construct accurate pyramids of biomass from appropriate data..

  This keeps your answer tightly aligned to the approved learning objective for Pyramids of biomass.

• Pyramids of biomass exam tip 1

  Use precise biological vocabulary when you explain how to use data and scales correctly when drawing pyramids of biomass..

  This keeps your answer tightly aligned to the approved learning objective for Pyramids of biomass.

• Pyramids of biomass exam tip 1

  Use precise biological vocabulary when you explain how to interpret biomass pyramids in relation to food chains and trophic levels..

  This keeps your answer tightly aligned to the approved learning objective for Pyramids of biomass.

• Transfer of biomass exam tip 1

  Use precise biological vocabulary when you explain how to describe how biomass is transferred from one trophic level to the next..

  This keeps your answer tightly aligned to the approved learning objective for Transfer of biomass.

• Transfer of biomass exam tip 1

  Use precise biological vocabulary when you explain how to recall that producers transfer only a small proportion of incident light energy into biomass by photosynthesis..

  This keeps your answer tightly aligned to the approved learning objective for Transfer of biomass.

• Transfer of biomass exam tip 1

  Use precise biological vocabulary when you explain how to recall that only about one tenth of biomass is transferred to the next trophic level..

  This keeps your answer tightly aligned to the approved learning objective for Transfer of biomass.

• Transfer of biomass exam tip 1

  Use precise biological vocabulary when you explain how to explain how biomass is lost because not all ingested material is absorbed..

  This keeps your answer tightly aligned to the approved learning objective for Transfer of biomass.

• Transfer of biomass exam tip 1

  Use precise biological vocabulary when you explain how to explain how biomass is lost in faeces through egestion..

  This keeps your answer tightly aligned to the approved learning objective for Transfer of biomass.

• Transfer of biomass exam tip 1

  Use precise biological vocabulary when you explain how to explain how absorbed material is lost as waste, including carbon dioxide and water from respiration..

  This keeps your answer tightly aligned to the approved learning objective for Transfer of biomass.

• Transfer of biomass exam tip 1

  Use precise biological vocabulary when you explain how to explain how absorbed material can be lost as urea in urine..

  This keeps your answer tightly aligned to the approved learning objective for Transfer of biomass.