Answer:
Which is the oldest tree?
What falls down but is never injured?
Men in skirts blow into these.
Hot tempered and sometimes it blows its top, making a mess of everything.
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
It is an insect, and the first part of its name is the name of another insect. What is it?