Which one of the following statement 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.

Pyramid of energy is always upright .Correct. Energy flow decreases at each trophic level due to the 10% law.

Saprophytes are given top place in ecological pyramids .Incorrect. Saprophytes are not included in ecological pyramids, even though they play a vital role in nutrient recycling.

Pyramid of number can be inverted in the terrestrial ecosystem . correct . Example: In a tree ecosystem, one big tree (producer) supports many herbivores, so the pyramid of numbers becomes inverted.

It doesn't take into account the same species belonging to two or more trophic levels .Correct. Same species in multiple trophic level is a limitation of ecological pyramids, as some organisms (like omnivores) occupy more than one level. For example, an omnivore like a bear (eats plants + animals) is not properly represented.