Ecological Pyramids - Environment & Ecology for UPSC CSE: In this lesson Shreyaa explains the various types of the ecological pyramids. An ecological pyramid (also trophic pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem. Biomass is the amount of living or organic matter present in an organism. Must watch for all aspirants to revise the environment and ecology section of t