A biomass pyramid shows the relation between biomass and trophic level. It quantifies the amount of biomass found in all trophic levels at any one mom...
Only 10% of energy becomes available to predators!
Careful with size! Top predator is not always the biggest organism around.
BIOMASS PYRAMID • A biomass pyramid shows the relation between biomass and trophic level. It quantifies the amount of biomass found in all trophic levels at any one moment in time. Typical units are g/ m2 or cal/m2. Use units to avoid confusion with an energy pyramid.
NUMBERS PYRAMID • A numbers pyramid is very similar to a biomass pyramid, but instead it shows the number of individuals found in each trophic level.
1. Which statement best describes one of the levels of this pyramid?
a) Level A contains the largest producers in the pyramid. b) The organisms in level B obtain food directly from level A. c) Level C contains the largest group of consumers in the pyramid. d) Level D contains the greatest number of heterotrophs.
2. Grain & algae both have a calorie content of 25000 calories. When does a Hawk obtain 25 calories?
a) When the hawk is a primary consumer b) When the hawk is a secondary consumer c) When the hawk is a tertiary consumer d) When the hawk is a quaternary consumer
