| Upright Pyramid | Inverted Pyramid |
| $(1)$ In this type of pyramid,the number of organisms and biomass is highest at the producer level and decreases at subsequent trophic levels. | $(1)$ In this type of pyramid,the number of organisms and biomass is lowest at the producer level and increases at subsequent trophic levels. |
| $(2)$ The base of the pyramid consists of a large number of producers. | $(2)$ The base of the pyramid consists of a small number of producers. |
| $(3)$ Energy pyramids are always upright. | $(3)$ Pyramids of number and biomass can be inverted in certain ecosystems. |
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