Answer:
I am round. I have only one line. Circle is not my name indeed. What am I?
I am so delicate that even mentioning me breaks me. What am I?
Lives in winter, dies in summer, and grows with its roots upward. What is it?
I can be short and sometimes hot. When displayed I'm never cold. What am I?
I am not a toy though many use me for pleasure. I have a butt but I cannot poo.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.