Which of these is/are limitation/s of ecological pyramids? I. Decomposers are not given any place in ecological pyramids. II. Ecological pyramids do not accommodate a food web. III. Ecological pyramids may be upright or inverted. IV. They don't consider omnivores in two different trophic levels.

Step-by-step solution

Ecological pyramid is a graphical representation of relationships between organisms at different trophic levels. The base of the pyramid represents producers, whereas the apex represents tertiary consumers. Ecological pyramid considers one organism at one trophic level and does not consider omnivores. It assumes that nature has a simple food chain, but actually there are complicated interconnected food chains called food webs. Decomposers which help in recycling the energy are also not given any place.