Question

What do you mean by ecological pyramid explain with its typs?

Answer 1

Ecological pyramid is a graphical representation in the form of a pyramid showing the feeding relationship of groups of organisms. Biomass pertains to the amount of living or organic matter in an organism.

• 1. Pyramid of Number:
• It depicts the number of individual organisms at different trophic levels of food chain. This pyramid was advanced by Charles Elton (1927), who pointed out the great difference in the number of the organisms involved in each step of the food chain.
• 2. Pyramid of Biomass:
• The biomass of the members of the food chain present at any one time forms the pyramid of the biomass. Pyramid of biomass indicates decrease of biomass in each tropical level from base to apex.
• 3. Pyramid of Energy:
• When production is considered in terms of energy, the pyramid indicates not only the amount of energy flow at each level, but more important, the actual role the various organisms play in the transfer of energy. An energy pyramid illustrates how much energy is needed as it flows upwards to support the next trophic level.