Answer:
What can be opened but cannot be closed?
A fruit on a tree. A tree on a fruit.
The leaves are on the fruit, the fruit is on the leaves. What is it?
This for is a baked dish of fruit, or meat and vegetables, typically with a top and base of pastry.
Patch upon patch, without any stitches, if you tell me this riddle, I'll give you my breeches.
What is always coming but never arrives?