You encounter a plant that has green structures on tall brown stalks. Which kind of plant is this, and what are the green structures? 

Responses

It is a vascular plant, and the structures are roots.
It is a vascular plant, and the structures are roots. - no response given

It is a nonvascular plant, and the structures are roots.
It is a nonvascular plant, and the structures are roots. - no response given

It is a nonvascular plant, and the structures are leaves.
It is a nonvascular plant, and the structures are leaves. - no response given

It is a vascular plant, and the structures are leaves.

It is a vascular plant, and the structures are leaves.