The Queen's Third Test Is a Real Puzzler

This tiny, little seed will one day grow into an oak tree. The queen gave her daughter a long thoughtful then she gave her a smilewell done, my dear. You've passed your second test. I am impressed by the cleverness, quick wit and common sense you've shown so far. Don't thank me yet, because your third test is a real puzzler, and i need time to prepare for it. Meet me in my throne room first thing to morrow and we'll see if you have what it takes to become queen.