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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

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Topic 7 · Run for your Life

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Topic 8 · Grey Matter

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Quiz

5.1.6 Net Primary Productivity – Exam questions

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  • Questions count: 8
  • Passing grade: B+
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1.

Net primary productivity is

GPP plus respiration
energy absorbed by the leaf
GPP minus respiratory losses
energy in decomposers
2.
Which statement best describes Net primary productivity?
The total dry mass of living material at a trophic level.
Eats plants / eats animals / eats both.
Makes its own food from inorganic sources — photosynthesis or chemosynthesis.
GPP minus the energy producers use in respiration — what is available to consumers.
3.
Producers fix 12 000 kJ (GPP) and use 4 500 kJ in respiration. What is the net primary productivity?
16 500 kJ
7 500 kJ
4 500 kJ
12 000 kJ
4.

Gross primary productivity (GPP) is

the energy lost in respiration
the energy passed to consumers
the mass of producers
the rate at which energy is incorporated into organic molecules by producers
5.
Which statement best describes Gross primary productivity?
Building food using energy from chemical bonds, not light — deep-sea vent bacteria.
All the interconnected chains in a community.
Total energy fixed by producers.
The total dry mass of living material at a trophic level.
6.
Which factor leads to a higher rate of net primary production?
SAT Biology - Question 175
A
B
C
D
E
7.
According to the chart, which best describes the relationship between solar energy and net primary production?
SAT Biology - Question 176
A
B
C
D
E
8.
The graph shows net primary production. Based on the data, which biome could potentially have a gross primary production rate equivalent to 500 grams per square meter per year?
SAT Biology - Question 177
A
B
C
D
E
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Part of Topic 5 · On the Wild Side — see every lesson and quiz in this unit.
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