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Biology: 4 Main Phyla of Plants

4/15/10
by

Lindsay Langston

on 16 April 2010

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Transcript of Biology: 4 Main Phyla of Plants

The 4 Main Phyla of Plants
By: Lindsay Langston The 4 phylas include:
Charophytes
Bryophytes
Pteridophytes
Gymnosperms Charophytes Common Name: green algae
Scientific Name: Charophyta Examples:
plants that have grown submerged in the water
molluscs
stoneworts
staghorm algae, black brush algae, green spot algae
Human Uses/Effects on Society:
Many species require high water quality and clarity for survival, so their presence shows
that the ecosystem is healthy.
While growing, they absorb nutrients and help calrify the water.
They are useful in physiological studies. They are related to land plants, they share many of the metabolic, electrophysical and chemical attributes that those plants have. By understanding the physiology of algae, it will lead to further understanding of more important agriculutural plants.
Bryophytes Common Name: Mosses
Scientific Name: Bryophyta Examples:
liverworts
hornworts
any kind of moss


They are non-vascular plants and do not have flowers nor seeds.
Haploids
Human Uses/Effects on Society:
Abosrbs certain ions and secretes others
Used by gardners to improve the water-holding capacity of soil
Antiseptic properties; used for bandages Pteridophytes Common Name: ferns, green plants
Scientific Name: Pteridophyta Vascular plants
Produce neither flowers nor seeds
Reproduce and disperse only through spores Examples:
ferns
horsetails
clubmosses
spikemosses
quillworts
whisk-ferns
Uses to Humans/Effects on Society:
Medicinal purposes
Gymnosperms Common Name: Conifers, seed-bearing plants
Scientific Name: Gymnospermae Fruitless
Seed-bearing
Examples:
conifers
cycads
Gingko
Gnetales
Uses to Humans/Effects on Society:
They have major economic uses.
Pine, fir, spruce and cedar are all examples of conifers which are used for lumber.
Used for soap, varnish, paint, food and perfumes. The End
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