Those with a single seed leaf are called monocots (monocotyledons). The gymnosperms and angiosperms together compose the spermatophytes or seed plants. The Gymnosperms, with the Angiosperms, constitute the existing groups of seed-bearing plants or Phanerogams: the importance of the seed as a distinguishing feature in the plant kingdom may be emphasized by the use of the designation Spermophyta for these two groups, in contrast to the Pteridophyta and Bryophyta in which true seeds are unknown. The characteristic feature of angiosperms is the flower. Examples Examples of gymnosperms include pine, conifers, cycads, Gnetophytes, Ginko, spruce, cactus, fir. The seeds are formed when an egg is fertilized by pollen in the ovary. Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in yew, Torreya, Ginkgo. Conifers, in the division Pinophyta or Coniferophyta, are the most numerous of the gymnosperms; woody and with vascular tissue, these are cone bearing trees and shrubs. There are four different divisions of gymnosperm- pinophyta, or conifers, ginkgophyta, or ginkgos, cycadophyta, or cycads, and gnetophyta, or gnetum, ephedra, and welwitschia. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Angiosperms are seed-producing, flowering plants whose seeds are enclosed within an ovary. The Gymnosperms, with the Angiosperms, constitute the existing groups of seed-bearing plants or Phanerogams: the importance of the seed as a distinguishing feature in the plant kingdom may be emphasized by the use of the designation Spermophyta for these two groups, in contrast to the Pteridophyta and Bryophyta in which true seeds are unknown.
Related examples Gymnosperms Posted on 2011-04-15 10:56:57 Gymnosperm is a word to refer to a plant with a vascular system that reproduces with seeds, but does not flower.
The surviving gymnosperms in the Coniferophyta, Cycadophyta and Ginkgophyta are similar in their woody habit and pattern of seed development but are not closely related. Seeds are the result of the reproductive process. They both have got a sporophytedominant lifecycle. Angiosperms are flowering plants. This group is further classified, based on whether the seeds are naked or enclosed in fruits, giving us two groups: gymnosperms and angiosperms. The ovary is within the flower. the Coniferophyta, Gnetophyta, Cycadophyta and Ginkgophyta. Gymnosperms This term is made Gymnosperms are the plants characterized by the formation of naked seeds. The gymnosperms consist of the conifers, the cycads, the gnetophytes and the sole extant species of the Gynkgophyta division, the Gingko biloba. Gymnosperm is a word to refer to a plant with a vascular system that reproduces with seeds, but does not flower. Of these, the Coniferophyta represents the largest group.
Plant reproductive system - Plant reproductive system - Gymnosperms: The cycads are slow-growing dioecious (species with individuals that are either male or female) gymnosperms, the microsporangia (potential pollen) and megasporangia (potential ovules) occurring on different individual sporophytes. Gymnosperms rely on wind pollination to reproduce. The gymnosperms are classified into four separate divisions, viz. They also have seeds. Both groups belong to spermatophytes or plants with seeds. Start studying Gymnosperms and Angiosperms. Gymnosperms were the dominant land plants in the age of dinosaurs, the Cretaceous and Jurassic periods. The seeds are the ovules (female cells) fertilized by the male cell contained in the pollen, which contains the plant embryo.
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