spermatophyte Seed-bearing plant, including most trees, shrubs, and herbaceous plants. It has a stem, leaves, roots, and a well-developed vascular system. The dominant generation is the sporophyte. The Five Kingdoms scheme classifies seed plants as several distinct phyla: the Angiospermophyta (flowering plants), Coniferophyta (conifers), Ginkgophyta (ginkgo or maidenhair tree), Cycadophyta (cycads), and Gnetophyta (a group of cone-bearing desert plants).
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