Q:Does the reproduction in spermopsida depend on water ???
No.
And why is that?
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
A: Yes, the reproduction in Spermopsida, which is a class of seed plants, does depend on water. Spermopsida includes plants like ferns and mosses, which reproduce through a process called "alternation of generations."
In these plants, the reproductive process involves two distinct phases: the gametophyte phase and the sporophyte phase. The gametophyte phase produces sex cells (gametes), which are haploid (have half the number of chromosomes compared to the parent plant).
In order for fertilization to occur, water is required to enable the sperm (produced by the male gametophyte) to swim and reach the egg (produced by the female gametophyte). The sperm must travel through a film of moisture or water in order to reach the egg for fertilization.
This dependency on water for reproduction is one of the defining characteristics of plants that belong to the Spermopsida class. It should be noted, however, that not all seed plants require water for reproduction. Gymnosperms and angiosperms, which are the other two classes of seed plants, have evolved different reproductive strategies that do not rely on water for fertilization.