Q:Does the reproduction in spermopsida depend on water ???

Answer 1

No.

Answer 2

And why is that?

Answer 3

Try these sites.

http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20lectures/Seed%20Plants/seed%20plants.htm

http://www.mansfield.ohio-state.edu/~sabedon/campbl30.htm