The gymnosperms and angiosperms together constitute the spermatophytes or seed plants. The spermatophytes are subdivided into five divisions, the angiosperms and four divisions of …

Gymnosperm, any vascular plant that reproduces by means of an exposed seed, or ovule—unlike angiosperms, or flowering plants, whose seeds are enclosed by mature ovaries, or fruits. The seeds …

May 18, 2025 · Gymnosperms are flowerless plants with seeds that are not covered by an ovary. There are four main types of gymnosperms: conifers, cycads, ginkgoes, and gnetophytes. Gymnosperms …

Oct 26, 2024 · Learn about gymnosperms in biology. Get the definition, example, life cycle, classification, and differences from angiosperms.

Gymnosperms (“naked seed”) are a diverse group of seed plants and are paraphyletic. Paraphyletic groups do not include descendants of a single common ancestor. Gymnosperm characteristics …

Others were the ancestors of the plants we now know collectively as "gymnosperms". In these plants the seeds are not enclosed in an ovary, as in the flowering plants; they grow on the surface of a modified …

Jul 23, 2022 · Gymnosperms are a group of seed-bearing plants that do not produce flowers or fruits. Gymnosperms are not surrounded by fruit. They are believed to have first appeared during the …

Gymnosperms are a relatively small group of plants that do not flower and bear "naked seeds." This means that the seeds are produced on the surface of the reproductive structure, rather than …

The gymnosperms are the most ancient seed plants that originated during the late Palaeozoic (i.e., 350 million years ago from the upper Devonian to the present) era, but flourished well during the Mesozoic.

Nov 30, 2025 · The Database provides information for all species and higher-ranked taxa of the gymnosperms, i.e., conifers, cycads, ginkgo, and the gnetophytes. You enter the taxonomic tree at …