You are presented with the quiz "What have primary and secondary meristems for growth and length and width into the ground?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "roots have primary and secondary meristems for growth in length and width" and "roots Roots anchor the plant into the ground". 

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


 

       plants' anchors    