Three statements are given, followed by three conclusions numbered I, II and III.
Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.

Statements:
All flowers are leaves.
All leaves are stems.
Some stems are roots.

Conclusions:
I. Some stems are leaves.
II. Some flowers are roots.
III. Some leaves are flowers.