Question: what are some of the characteristics of ferns?
Answer: Ferns are seedless vascular plants of humid tropics and temperate areas. ... 
They constitute the largest living group of primitive vascular plants with over 10,000 species. ... 
Plant body is a sporophyte. ... 
The stem is underground rhizome in most of the ferns. ... 
Roots are adventitious.
Leaves are large and are called fronds.