Question

a. Explain the significance of ecological pyramids with the help of an

example.

b. Why are the pyramids referred to as ‘upright’ or ‘inverted’?​

Answer 1

Answer:

It denotes that the number or biomass at the first trophic level or producer level is lower as compared to the higher trophics like herbivores or carnivores. These are inverted pyramids. For example- large number of insects feeding on a big tree gives an inverted pyramid of number

B. These pyramids are called upright pyramids. It means producers are more in number and in biomass than the herbivores, and herbivores are more in number and biomass than the carnivores. ... The pyramid of biomass in sea is also generally inverted because the biomass of fishes far exceeds that of phytoplankton.

Answer 2

Answer:

a.) It means producers are more in number and in biomass than the herbivores, and herbivores are more in number and biomass than the carnivores. Also energy at a lower trophic level is always more than that at a higher level. ... For example- large number of insects feeding on a big tree gives an inverted pyramid of number.

b.) An energy pyramid is always upright because when energy flows from a particular trophic level to the next trophic level, some energy is always lost as heat at each step.