The tree topology is a variation of the bus topology.
In tree topology, the shape of the network is that of an inverted tree with the central root branching and sub-branching to the extremities of the network.
Transmission in the tree topology takes place in the same way as in the bus topology. In both the cases, there is no need to remove packets from the medium because when a signal reaches the end of the medium, it is absorbed by the terminators.
The tree topology is best suited for applications which have a hierarchical flow of data and control. Since the tree topology is a modification of a pure network topology, bus topology, it is a hybrid topology.