Knowledge Tree
Gymnosperms
Also known as: Gymnosperm
Facts (20)
Sources
5.9.1: Kingdom Plantae - Evolution and Phylogeny bio.libretexts.org Nov 24, 2025 14 facts
claimThe Ginkgoales, a group of gymnosperms with only one surviving species, Ginkgo biloba, first appeared during the lower Jurassic period.
claimModern gymnosperms are classified into four taxa: Coniferophyta (conifers), Cycadophyta (cycads), Ginkgophyta (ginkgo), and Gnetophyta.
claimSeed plants include gymnosperms (such as conifers) which produce "naked seeds," and angiosperms which produce flowers.
claimGymnosperms are a diverse group of seed plants that are paraphyletic and characterized by naked seeds, separate female and male gametes, wind pollination, and the presence of tracheids for water and solute transport.
measurementAngiosperms (flowering plants) surpassed gymnosperms by the middle of the Cretaceous period, approximately 100 million years ago (Ma), in the late Mesozoic era.
claimSeed plants include angiosperms and gymnosperms.
measurementGymnosperms (cone-bearing plants) first appeared in the Pennsylvanian period, approximately 319 million years ago (Ma).
claimGymnosperms dominated the landscape during the early (Triassic) and middle (Jurassic) Mesozoic era.
claimThe Jurassic period was characterized by the presence of cycads (palm-tree-like gymnosperms), Ginkgoales, and conifers.
claimThe evolutionary lineage of Charophytes, which eventually led to modern mosses, ferns, gymnosperms, and angiosperms, is considered monophyletic.
claimAngiosperms formed a sister clade that developed in parallel with gymnosperms, rather than being derived from them.
claimGymnosperms dominate ecosystems such as the taiga (boreal forests) and alpine forests at high elevations due to their adaptation to cold temperatures and dry growth conditions.
claimGnetophyta, a group consisting of 70 species across three genera, are considered the closest gymnosperm group to angiosperms because they produce true xylem tissue with vessel elements.
measurementGymnosperms expanded and reached their greatest diversity during the Mesozoic era (approximately 240 million years ago), supplanting ferns in the landscape.
Plant Kingdom – Plantae - BYJU'S byjus.com 5 facts
claimThe term 'Gymnosperm' is derived from the Greek words 'gymno' meaning naked and 'sperma' meaning seed.
claimCommon examples of Gymnosperms include Cycas, Pinus, and Ephedra.
claimGymnosperms are characterized by a well-differentiated plant body, the presence of vascular tissues, and the production of naked seeds that are not enclosed within a fruit.
claimKingdom Plantae is classified into five subgroups: Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, and Angiosperms.
claimThe plant kingdom is classified into two groups: Cryptogams, which are non-flowering and non-seed bearing plants (e.g., Thallophyta, Bryophyta, Pteridophyta), and Phanerogams, which are flowering and seed-bearing plants (e.g., Gymnosperms, Angiosperms).
Plantae kingdom (Honors) - KaiserScience kaiserscience.wordpress.com 1 fact
claimGymnosperms are nonflowering plants that possess unenclosed, naked seeds.