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Energy transfer, biodiversity and human impact

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Question 18

An ecologist investigated the marine food web of a cold-water coastal ecosystem.

  • The ecologist observed grey seals hunting Atlantic cod.
  • Atlantic cod were found to feed on herrings.
  • Microscopic phytoplankton form the base of the food web by photosynthesising.
  • Herrings feed on krill.
  • Krill consume microscopic phytoplankton.

Give the food chain for these feeding relationships. Include arrows to show the direction of energy transfer.

[3]

Energy transfer, biodiversity and human impact Questions

  1. GCSE
  2. /Biology
  3. /Energy transfer, biodiversity and human impact