How are stems and tree trunks different?

Answer:
Not necessarily. Technically any stem can become the new "trunk of the tree". Its a hormonal thing. The tips of the stems and trunks are very light sensitive and can sense the tallest "trunk". The apex or tips of every trunk/stem has the same hormones, but the tallest tree trunk is active. If you were to cut off the tallest stem of a tree the second tallest limb would grow into take its place.
First answer by ID1252405949. Last edit by ID1252405949. Question popularity: 1 [recommend question].