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Transfer Of Biomass (biology Only) (GCSE Biology)

The following is a GCSE Biology test covering 'Transfer Of Biomass (biology Only)' from the broader topic Ecology. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Approximately what fraction of energy from one trophic level is typically transferred to the next trophic level?
An ecosystem has a large amount of primary productivity but low transfer to consumers. Which feature could explain this?
What is the main reason most biomass is not passed on to the next trophic level?
Why can a small change at the producer level cause large changes at higher trophic levels?
Which management method would conserve biomass in a managed forest while still allowing some timber production?
What term describes the dry mass of living material in a trophic level per unit area?
Which statement about respiration and biomass is correct?
Which factor is least likely to affect the transfer of biomass between trophic levels?
Which human activity typically reduces the transfer efficiency from primary producers to consumers?
Which practice increases the amount of biomass retained in a food chain and so improves efficiency for human food production?
In aquatic food chains, why can the pyramid of biomass sometimes be inverted (small biomass of producers supports larger consumer biomass)?