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Course: Edexcel A Level Biology A (SNAB) 9BI0
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Edexcel A Level Biology A (SNAB) 9BI0

Topic 1 · Lifestyle, Health and Risk

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Topic 2 · Genes and Health

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Topic 3 · Voice of the Genome

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Topic 4 · Biodiversity and Natural Resources

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Topic 5 · On the Wild Side

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Topic 6 · Immunity, Infection and Forensics

0/41

Topic 7 · Run for your Life

0/55

Topic 8 · Grey Matter

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Quiz

5.1.7 Calculating the Efficiency of Biomass and Energy Transfers – Exam questions

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  • Questions count: 6
  • Passing grade: B+
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1.
Which statement best describes Biomass?
GPP minus the energy lost by producers in respiration; the energy available to consumers.
The mass of living material in an area, often measured as dry mass per unit area.
A living factor such as competition, predation or disease.
The position of an organism in a food chain.
2.
The table shows what happens to 100 kJ eaten by a caterpillar. How much energy is stored as new biomass?
10 kJ
35 kJ
55 kJ
45 kJ
3.
From the diagram, what percentage of the energy in the grass eaten becomes new rabbit biomass?
Dr Dabour Hub Academy - figure 1
50%
40%
10%
90%
4.
The diagram represents the biomass of different trophic levels in a terrestrial ecosystem. Which level represents producers?
SAT Biology - Question 061
A
B
C
D
E
5.
How much plant biomass is added to a square meter of temperate forest in one month?
SAT Biology - Question 174
A
B
C
D
E
6.
A pyramid of biomass can sometimes be inverted, for example in some plankton communities. True or false?
True
False
False, never
True only on land
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Part of Topic 5 · On the Wild Side — see every lesson and quiz in this unit.
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