What are the most economically important divisions of gymnosperms?
Gymnosperms have major economic uses. Pine, fir, spruce, and cedar are all examples of conifers that are used for lumber, paper production, and resin. Some other common uses for gymnosperms are soap, varnish, nail polish, food, gum, and perfumes.
What is the most economically important group of gymnosperm?
Gymnosperms are a good source of food. Seeds of these non-flowering plants are widely used as an edible species, used for producing various food products. These plant species include: ginko, pinus, cycas, etc. A few species of gymnosperms are a good source of starch and are also used in the production of sago.
What is the main group of gymnosperms?
Comprising 550 species, conifers are the largest and most familiar group of gymnosperms. Conifers can range in size from tall trees, such as redwoods, to shrubs like yews and junipers.
What is the most abundant group of gymnosperms?
By far the most abundant group of gymnosperms is the conifers: pines, spruces, firs, hemlocks, cypresses, cedars, junipers, redwoods and relatives.
What are the major divisions of gymnosperms?
Comprising 65 genera and 720 species, the gymnosperms are divided into four extant divisions, Coniferophyta (the conifers), Cycadophyta (the cycads), Ginkgophyta (the ginkgoes), Gnetophyta (the gnetophytes) and two extinct divisions, Pteridospermophyta and Cycadeoidophyta.
What are the divisions of gymnosperm?
The gymnosperms are subdivided into five Divisions, four of which, the Cycadophyta, Ginkgophyta, Gnetophyta, and Pinophyta (also known as Coniferophyta) are still in existence while the Pteridospermatophyta are now extinct. Newer classification place the gnetophytes among the conifers.
What are the main divisions and representing species of the gymnosperms?
All of the four divisions of gymnosperms: Coniferophyta (conifers), Cycadophyta (cycads), Ginkgophyta (Ginkgo biloba), and Gnetophyta (Gnetum) are represented in our collections.
What are the 4 divisions under gymnosperms?
Gymnosperms consist of four main phyla: the Coniferophyta, Cycadophyta, Gingkophyta and Gnetophyta. Conifers are the dominant plant of the gymnosperms, having needle-like leaves and living in areas where the weather is cold and dry.Jun 8, 2022
What are the 4 major lineages of gymnosperms What is the most species rich of these lineages?
(A) The four main lineages of extant gymnosperms: (1) conifers (Pinus resinosa), (2) cycads (Cycas sp.), (3) Ginkgo biloba, and (4) gnetophytes (Ephedra chilensis).
What are the four lineages of gymnosperms?
They include four lineages with living representatives, including the conifers (Coniferophyta; about 630 species), cycads (283 species in 11 genera), the maidenhair tree, Gingko biloba (the only species in the Gingkophyta), and the gnetophytes (including three genera, Gnetum, Welwitchia, and Ephedra, totaling about 65 ...
Which group of gymnosperms has the most species?
Conifers are by far the most abundant extant group of gymnosperms with six to eight families, with a total of 65–70 genera and 600–630 species (696 accepted names).