Biology 9700 · AS & A Level · Transport of oxygen and carbon dioxide

Transport of oxygen and carbon dioxide — practice question

An insect ingests $180\ \text{J}$ of plant material. From this, $95\ \text{J}$ of energy leaves in the insect’s faeces and $58\ \text{J}$ is released in respiration. What percentage of the energy in the original plant material absorbed by the insect is turned into biomass?

  • A$10\%$
  • B$15\%$
  • C$32\%$
  • D$47\%$

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