AP BIOLOGY

Detailed explanation-1: -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 of many gymnosperms (literally, “naked seeds”) are borne in cones and are not visible until maturity.

Detailed explanation-2: -Gymnosperms are plants that have seeds but no flowers. The seeds of these plants are on cones or in cups. Most gymnosperms are evergreen. Gymnosperms include conifers, cycads and the ginkgo.

Detailed explanation-3: -The vascular plants include a wide range of plants from all the angiosperms, gymnosperms, and other pteridophytes. These groups are scientifically named Tracheophyta, equisetopsida, and tracheobionta. The term eutracheophyte is used for all other types of vascular plants.

Detailed explanation-4: -Gymnosperms. The term gymnosperm (“naked seeds”) represents four extant divisions of vascular plants whose ovules (seeds) are exposed on the surface of cone scales. The cone-bearing gymnosperms are among the largest and oldest living organisms in the world. They dominated the landscape about 200 million years ago.

Detailed explanation-5: -Gymnosperm is a seed-producing plant that includes conifers, cycads, gnetophytes and ginkgos.