I don't really know... but I am sure it HAS roots.
The structure that fern roots grow from are rhizomes.
Yes
Mosses are non-vascular plants whereas ferns are vascular. In ferns Sporophyte is dominant but in mosses gametophyte is dominant generation. Ferns have definite roots but in mosses leaves and roots are mostly false.
Their roots.
It is ferns
ferns
mosses and ferns get water by absorbing the moistness
Ferns
Mosses do not have any of those three structures for that would mean it would be a vascular plant. A moss does contain rhizoids which are root-like structures, but roots are defined as having xylem and phloem, which mosses certainly do not have.
the underside of the gametophyte
have true roots, stem ,and leaves
yes. Rhizomes are basically stems that run along the ground. They help roots support the height of the plant. They (ferns) require moist environments because the rhizomes can't reach far for water.