Answer :

An ecological pyramid is a graphical representation which is used for showing the various ecological features like the number of individuals present at a trophic level, the amount of energy and the biomass at each trophic level.

The three types of ecological pyramids are:


i) Pyramid of number.


ii) Pyramid of biomass.


iii) Pyramid of energy.


The above can be explained further:


i) Pyramid of number:


• It is an ecological pyramid which represents the number of individual organisms at each trophic level in an ecosystem.


• Pyramid of numbers can be either upright or inverted.


ii) Pyramid of biomass:


• It is an ecological pyramid which represents the amount of organic matter present at each trophic level in an ecosystem.


• It can be either upright or inverted pyramid.


iii) Pyramid of energy:


• It is an ecological pyramid which represents the total amount of energy present at each trophic level in an ecosystem.


• It can be either upright or inverted pyramid.


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