Definition of Trophic Level
A trophic level is defined as the group of organisms present within an ecosystem that is occupying the same food chain level. There are five different trophic levels present in the food chain and they differ from each other concerning the nutritional relationship with the source of primary energy that is the sun. The first level consists of producers, the rest five are consumers.
Hence. The energy flows between these levels. About only 10% of the energy consumed by the organisms belonging to these trophic levels is converted into biomass. The rest of the energy is dissipated in the form of heat, movement, and other biological functions.