Pyramid of biomass (Edexcel GCSE Biology): Flashcards
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Pyramids of biomass
Pyramids of biomass
Represent relative biomass at each trophic level in a food chain
Biomass
Biomass
Total mass of living material
Biomass pattern up trophic levels
Biomass pattern up trophic levels
Less biomass as you move up
Why biomass decreases at each level
Why biomass decreases at each level
Energy is lost at each stage
Examples of producers
Examples of producers
Plants and algae
% of sunlight producers convert to biomass
% of sunlight producers convert to biomass
About 1%
Why only 1% of sunlight converted to biomass
Why only 1% of sunlight converted to biomass
Not all sunlight reaches photosynthesising parts
% of biomass transferred to next trophic level
% of biomass transferred to next trophic level
About 10%
% of biomass lost at each trophic level
% of biomass lost at each trophic level
90%
What biomass is a store of
What biomass is a store of
Energy
Mass of organisms as you go up trophic levels
Mass of organisms as you go up trophic levels
Goes down