Biology 9700 · AS & A Level · Transport mechanisms

Transport mechanisms — practice question

Two ecosystems, X and Y, that are equal in size were compared. They share the same climate. The comparison results are displayed. Based on the information in the table, which statement is not a valid inference about X and Y?

  • AA greater percentage of primary producers are likely to be consumed by primary consumers in X than in Y.
  • BX could be a marine aquatic ecosystem and Y could be a terrestrial ecosystem.
  • CEnergy losses between trophic levels are likely to be lower for X than for Y.
  • DThere is likely to be a higher rate of photosynthesis and production of organic matter in X than in Y.

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