Respuesta :
It would be stem since it is holding up the branches and leaves but root dosent work because root is in the ground.
Answer: Stem
The trunk of a tree is the stem part of the tree. It is the main wooden axis of the tree. It is important for identifying a particular tree species. The composition of the tree trunk varies from the bottom to the top. Trunks occur in both true woody plants and in the non woody plants. The thickening of the tree trunk is because of the formation of the secondary growth.
