Which organisms have the least amount of stored energy in an ecological pyramid

Answer

Tertiary Consumers get least amount of the energy.

Explanation

In an ecological pyramid less energy is available to organisms in the upper level because each organism releases some of the chemical energy as food and to the air as thermal energy. Therefore primary consumers get almost 10% of autotrophs prduced energy. The second consumers in the pyramid get 1% from primary consumer. In the case of tertiary consumers, they get only 0.1%. Hence the top consumer of a food pyramid receives the least energy.