Answer:
What can be opened but cannot be closed?
The leaves are on the fruit, the fruit on the leaves. What is it?
This orange vegetable is a favorite of Bugs Bunny
Five horses follow me to war, all the horses but I didn't.
I add lots of flavor and have many layers, but if you get to close I'll make you cry. What am I?
When is it bad luck to see a black cat?