(a) What is an ecological pyramid? Compare the pyramids of energy, biomass and numbers.
(b) Write any two limitations of ecological pyramids
Updated On 18th June 2025
Expert Explanation :
(a) An ecological pyramid is a graphic representation of an ecological parameter, like biomass, energy or number of individuals present in various trophic levels of a food chain with producers forming the base and top carnivores at the tip. Each trophic level represents a functional level. Therefore, it includes all the members of all the species operating at that level. The comparison among the three pyramids of energy, biomass and number are given as follows:
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(b) The limitations of ecological pyramids are:
(i) Ecological pyramids assume that food chains are simple. Simple food chains do not occur in nature, instead, food webs are present.
(ii) Ecological pyramids have no place for detritivores and decomposers though they play a vital role in ecosystem.
Key Points
=> Ecological pyramids were developed by Charles Elton therefore, also called as Eltonian pyramids.
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