18.

Your teacher describes an organism that digests its food externally before absorbing it. You also find out that this organism cannot move. Based on what you’ve learned, this organism is most likely a(n)
animal.
bacterium.
protist.
fungus.

fungus.

Based on the information provided, the organism that digests its food externally before absorbing it and cannot move is most likely a fungus. Fungi are non-motile organisms that obtain nutrients by secreting enzymes onto their food sources and then absorbing the digested nutrients. This method of digestion is called external digestion. Animals, bacteria, and protists typically digest their food internally.