Which of the following representations shows the pyramid of numbers in a forest ecosystem?

Explanation

The representation of the forest ecosystem in the pyramid of numbers is always upright because the higher trophic level comprising tertiary consumers is generally smaller than that of the lower trophic levels (i.e., secondary consumer, primary consumer, and primary producer). The pyramid of numbers is inverted in the case of a single tree producer which can provide nourishment to several herbivores such as birds which can further support a larger population of ectoparasites.