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EnglandBiologyQuick questions
3.5 Energy transfers in and between organisms
Quick questions on Productivity and biomass: GPP, NPP, calorimetry and farming - AQA A-Level Biology
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are net production of consumers?Show answer
Consumers also gain and lose energy, so for a consumer level:
What is farming practices that increase efficiency?Show answer
Farmers try to channel more of the available energy into the human food chain and less into competitors, pests and wasted respiration.
What is q1?Show answer
Define gross primary production and net primary production, and write the equation linking them. [3 marks]
What is q2?Show answer
A crop has a GPP of 30 000 kJ per m squared per year and loses 11 000 kJ in respiration. Calculate the NPP. [1 mark]
What is q3?Show answer
Explain how restricting the movement of farmed animals increases the efficiency of energy transfer to humans. [3 marks]
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