Practicing Success
Observe the given figure and answer the question. |
The value 3,54,000 in the figure represent: |
Number of primary consumers Number of secondary consumers Dry weight of secondary consumers in kgm-2 Dry weight of primary consumers in kgm-2 |
Number of secondary consumers |
The correct answer is Option (2) - Number of secondary consumers The base of each pyramid represents the producers or the first trophic level while the apex represents tertiary or top level consumer. The three types of ecological pyramids that are usually studied are (a) pyramid of number; (b) pyramid of biomass and (c) pyramid of energy. In most ecosystems, all the pyramids, of number, of energy and biomass are upright, i.e., producers are more in number and 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 at a higher level. |