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present day gymnosperms are divided into the four following phyla:
1-Cycadophyta: palm-like trees of tropics/subtropics
2-Ginkgophyta: only a single species: Ginkgo biloba
3-Coniferophyta: cone bearing trees, evergreens: pines, firs, spruce
4-Gnetophyta: consists of 3 genera:
a. welwitschia: in African deserts with only 2 long strap-like leaves
b. Ephedra: desert shrub, souce of alkaloid ephedrine - used to treat congestion of hay fever, Asthma
c. Gnetum: trees or vines with large leathery leaves
What else can I help you with?
Do scientists classify plant into three large groups?
Four: bryophytes, ferns, gymnosperms and angiosperms
Two groups of plants?
Angiosperms and Gymnosperms branch from a single common ancestor.
What is the 2 groups of plants that form seeds are?
Gymnosperms and angiosperms are the two groups of plants that make seeds. Gymnosperms have naked seeds. Angiosperms have seeds that are inside of a fruit that provides protection and food for the seed.
How many different groups of crystal structure are there in minerals?
There are about four different groups of crystals structures that are available in the minerals. The four have different orientations of the close-packed layers.
Seed plants which first appeared in the Paleozoic Era?
Gymnosperms.
Briefly describe the four groups of gymnosperms Which group is the largest and most economically important?
The four groups of gymnosperms are cycads, ginkgo, gnetophytes, and conifers. Conifers, which include pine, spruce, and fir trees, are the largest and most economically important group of gymnosperms due to their widespread distribution and economic significance in industries such as timber, paper production, and horticulture.
How many groups of gymnosperms exist today?
there are alot of different species but there is about the same number of angiospems so there is about 200,000-300,000
What are the four groups of terrestrial plants?
The four groups of terrestrial plants are bryophytes (mosses and liverworts), pteridophytes (ferns and their relatives), gymnosperms (conifers and cycads), and angiosperms (flowering plants). These groups vary in their reproductive structures and evolutionary history.
The four groups of gymnosperms are conifers cycads ginkgoes and what?
The fourth group of gymnosperms is called gnetophytes. They are a unique group of plants with distinctive features that set them apart from the other three groups. Gnetophytes include genera such as Ephedra, Gnetum, and Welwitschia.
What are the 4 groups of plants?
The four main groups of plants are mosses, ferns, gymnosperms, and angiosperms. Mosses are non-vascular plants, ferns are seedless vascular plants, gymnosperms have naked seeds (like pine trees), and angiosperms have seeds enclosed in fruits (flowering plants).
What are 2 large groups plants are classified?
angiosperms gymnosperms
What are 2 groups of vascular plants that produce seeds?
Angiosperms (flowering plants) and gymnosperms (conifers, cycads, ginkgo) are two groups of vascular plants that produce seeds. Angiosperms have seeds enclosed within a fruit, while gymnosperms have seeds not enclosed, usually in cones.
What two main groups of plants reproduce with seeds?
Gymnosperms and angiosperms
Is a fir a gymnosperm?
Ferns are not gymnosperms. Gymnosperms are divided into 4 groups,cycads,ginkgoes,gnetophytes,and conifers.
Do scientists classify plant into three large groups?
Four: bryophytes, ferns, gymnosperms and angiosperms
What is the clases of gymnosprem?
Gymnosperms are divided into four main classes: Coniferopsida (conifers), Cycadopsida (cycads), Ginkgopsida (ginkgo), and Gnetopsida (gnetae). Each class includes different groups of gymnosperms with distinct characteristics and reproductive structures.
What are 3 plants that are vascular plants?
The four groups of vascular plants are Lycophytes, Pterophytes, Gymnosperms, and Angiosperms.Plants in the following groups are:Lycophytes: Club mosses, Spike Mosses, QuilwortsPterophytes: Ferns, Horsetails, Whisk FernsGymnosperms: Ginko tree, ConiferAngiosperms: Flowers
