Gymnosperms (Gymnospermae) are a group of seed-bearing plants with ovules borne on the edge or blade of an open sporophyll, the sporophylls usually arranged in cone-like structures.
The other major group of seed-bearing plants, the Angiosperms, have ovules enclosed in a carpel, a sporophyll with fused margins.
The production of seeds distinguishes the gymnosperms and the angiosperms from other members of the vascular plants.
Thus together they are called seed plants..
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