Question

The graphic presentation of various aspects of ecosystems are in the form of pyramids. When such a presentation is made with reference to energy at different trophic levels, it will make ______.

Options

• an erect pyramid

• an inverted pyramid

• a cylinder

• a pyramid of variable shape

Answer 1

The graphic presentation of various aspects of ecosystems are in the form of pyramids. When such a presentation is made with reference to energy at different trophic levels, it will make an erect pyramid.

Explanation:

The pyramid of energy always forms an upright (erect) pyramid because energy decreases at each successive trophic level due to heat loss during metabolic activities. The amount of energy available decreases progressively from producers to top consumers, so the pyramid representing energy flow is always erect and never inverted or irregular.