Which one of the following statements is incorrect about ecological pyramids?

Saprophytes are given top place in ecological pyramids.

The correct answer is Option (2) → Saprophytes are given top place in ecological pyramids. 

Explanation of each statement:

Pyramids of energy is always upright. Correct – Energy flow in ecosystems is unidirectional and decreases at each successive trophic level due to loss of energy as heat, respiration, etc., so the energy pyramid is always upright.

Pyramids of number can be inverted in the terrestrial ecosystem.Correct – In some terrestrial ecosystems (like a forest), a single large tree (producer) can support many herbivores, leading to an inverted pyramid of number.

It doesn't take into account the same species belonging to two or more trophic levels. Correct – This is a limitation of ecological pyramids. For example, omnivores (like humans) that feed at multiple trophic levels are not accurately represented.

Saprophytes are given top place in ecological pyramids. Incorrect – Saprophytes (decomposers) like fungi and bacteria are not placed in ecological pyramids at all, even though they play a crucial role in nutrient recycling. They don't occupy a specific trophic level in the pyramid structure.