Biology 0610 · IGCSE · Nutrient cycles

Nutrient cycles — practice question

The diagram illustrates part of the nitrogen cycle. Which row correctly names the bacteria involved in processes W, X, Y and Z?

  • AW denitrifying; X decomposer; Y nitrifying; Z nitrogen-fixing
  • BW denitrifying; X nitrifying; Y decomposer; Z nitrogen-fixing
  • CW nitrifying; X decomposer; Y nitrogen-fixing; Z denitrifying
  • DW nitrogen-fixing; X nitrifying; Y decomposer; Z denitrifying

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