Biomass and Net Primary Productivity (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What % of sunlight is captured by producers through photosynthesis?
What % of sunlight is captured by producers through photosynthesis?
Less than 2%
If GPP is 20,000 kJ/m²/year & respiration is 8,000, what is NPP?
If GPP is 20,000 kJ/m²/year & respiration is 8,000, what is NPP?
12,000 kJ/m²/year
What does biomass refer to?
What does biomass refer to?
Mass of living organisms in an ecosystem
Why do food chains rarely extend beyond 4-5 levels?
Why do food chains rarely extend beyond 4-5 levels?
Insufficient energy remains
What is the ultimate fate of all captured energy in ecosystems?
What is the ultimate fate of all captured energy in ecosystems?
Transformation to heat
In grasslands, what % of plant energy goes to decomposers?
In grasslands, what % of plant energy goes to decomposers?
90%
What does GPP represent?
What does GPP represent?
Total energy fixed by plants via photosynth
What does biomass include beyond living tissue?
What does biomass include beyond living tissue?
Leaf litter & dead wood
What trophic level do primary consumers occupy?
What trophic level do primary consumers occupy?
Level 2
What comprises the greatest portion of terrestrial biomass?
What comprises the greatest portion of terrestrial biomass?
Plants