Question
What does an Ecological Pyramid indicate? Explain the three different types of Upright Pyramids in nature with the help of an example of each.

Answer

An ecological pyramid is the graphic representation of the number, food/ energy relationship or biomass of the different trophic levels of a food chain at a given time.

  1. In general the pyramids of number, of biomass and of energy are upright.
  2. It is because the producers are more in number and biomass than the herbivores and the herbivores are more in number and biomass than the carnivores.
  3. The pyramid of energy in any ecosystem is always upright because energy at the producer level is the highest and decreases at successive higher trophic levels; when energy flows from one trophic level to the next, higher trophic level, some amount of energy is lost as heat and only 10% of the energy is transferred.

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