Which of the following does not have any place in the ecological pyramids?

Detritus

The correct answer is Option (3) → Detritus

Ecological pyramids represent the flow of energy or biomass through trophic levels involving living organisms such as plants, herbivores, and various consumers like frogs and birds. Detritus (dead organic matter) does not occupy a specific trophic level in these pyramids, as it is not a living organism but rather decomposed material that feeds decomposers.

Decomposers and detritus are usually not represented in traditional ecological pyramids, which focus on the grazing food chain rather than the detritus-based food chain.