Nervous system of Lobatocerebrida. Why do these simple unsegmented annelids, which are unselective deposit feeders and lack sense organs,…
Nervous system of Lobatocerebrida. Why do these simple unsegmented annelids, which are unselective deposit feeders and lack sense organs, have a relatively complex brain?
Open the “Ecology, evolution, and paleontology” section on Wikipedia →
Source: List of unsolved problems in biology (CC BY-SA 4.0)