Which came first, the tree or the seed?

Puttachi is eating a tasty fruit, and she says:  Amma, this is so tasty! Thank you for giving it to me!  But wait, who bought it? 

Me: Papa.

She: Ok, I'll thank him.  But wait.  He did not make the fruit.  The tree made it.  So I'll thank the tree.  But wait!  Where did the tree come from?  The seed.  So I've to thank the seed.  But wait.  Where did the seed come from?  From another tree...

She pauses, looks confused.

She: Amma, which came first, the tree or the seed?

Me: Aha, you've hit upon the chicken-egg question.  (I explain)

She: This is so strange... let me think...

She's been thinking about this for the last one week, and suddenly out of the blue, she'll come up with an answer and an explanation.

Amma!  I think it is the tree.  The seed perhaps just formed, just like that.  But how can it form just like that?  No no... wait... (Thinks some more) Or it dropped from somewhere.  But from where?  There has to be a tree somewhere ......  Or maybe atoms just got together and formed the seed.  But wait....! 

And it goes on and on.

I'm loving it.