Ecological pyramids , which can be inverted or upright, depict biomass , energy, and the number of organisms in each trophic level. Biomass is an estimate of the combined dry mass of all animals and plants. A pyramid of biomass measures the total amount of biomass in each trophic level of an ecosystem instead of using the total population of every species. Biomass pyramids can be upright or inverted, depending on the ecosystem. Learn about pyramids of numbers and biomass for your IGCSE BIology exam. This revision note includes examples with diagrams and examiners tips.
