Fungus is the organism in the food web displayed in the image in the first trophic level of the ecosystem.
What is trophic level?
Trophic level is defined as the position of an organism in the food chain or food web.
The trophic level consists of organisms at different levels. The first trophic level is made up of producers that initiate the transfer of energy.
According to this question, an image showing a food web is given. The first trophic level in this food web is the fungus because it starts the energy transfer.
Learn more about trophic level at: https://brainly.com/question/13267084
