Both are soft. Both have thorns. Both support the plant. Both have woody bark.
I gave my students this multiple choice question: How are the stem of a tree and the stem of a flower most similar?

Only one answer is correct among these 4 choices:
- Both are soft.
- Both have thorns.
- Both support the plant.
- Both have woody bark.

Could you tell me which one is correct?

Both support the plant.