Q. Read the following statements. With respect to the ecological pyramid, mark the correct statements.
a. In most of the ecosystems, pyramids of number, energy, and biomass are upright.
b. Producers are generally more in number or biomass than herbivores in an upright pyramid.
c. Herbivores are less in number and biomass than carnivores in an inverted pyramid.
d. Energy content is higher at a lower trophic level than that at a higher trophic level.

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Solution:

All the statements explain the characteristics of pyramids. In most ecosystems, all the pyramids of number, energy or 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 that at a higher level.