• The pyramidal representation of tropic levels of different organisms based on their ecological position [producer to final consumer] is called as an ecological pyramid.
  • The food producer forms the base of the pyramid and the top carnivore forms the tip. Other consumer tropic levels are in between.
  • The pyramid consists of a number of horizontal bars depicting specific tropic levels. The length of each bar represents the total number of individuals or biomass or energy at each tropic level in an ecosystem.
  • The ecological pyramids are of three categories.
  1. Pyramid of numbers,
  2. Pyramid of biomass, and
  3. Pyramid of energy or productivity.