You are presented with the quiz "Most modern gymnosperms are trees covered in what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "most modern gymnosperms are trees with woody trunks" and "woody plants such as trees and shrubs have stiff stems or trunks covered in bark". 

So, what's the best answer to the question?


 

 bark          