The four major plant divisions are Mosses(bryophytes), Ferns( pteridophytes), Conifers(gymnosperms), and Flowering Plants(Angiosperms).
Plants in the moss phylum are non-vascular and do not have seeds, roots or flowers. They are able to undergo photosynthesis despite not having stems or leaves. As they begin to decompose, they help with the formation of soil in order for other plant species to grow in that area. They can grow in a wide range of climates such as the dessert and tropical regions.
Plants in the fern phylum do not have seeds or flowers like the bryophytes. Ferns do however, have have a vascular system which is used to carry fluids throughout the plant. Ferns reproduce through spores that are found underneath of their leaves. Ferns are very adaptable to many environments such as rocky areas and woodland. Due to their adaptability, ferns are mostly used as house or landscape plants. An example is the fox-tail fern.
Conifers(gymnosperms) are the phylum of vascular plants that do not grow flowers but do produce seeds. The seeds are commonly referred to as "naked seeds" because they are not covered by a flower or fruit tissue. Therefore many conifers use a cone-like structure, to produce their seeds. They can grow as trees or shrubs. They can grow in different environments but most conifers prefer the sun. An example of a conifer is a pine tree.
The last phylum is the Flowering plants aka the angiosperms. They are vascular plants that contain both seeds and flowers. Reproduction occurs by growing their seeds inside an ovary that is located inside their flowers. Once the seed is fertilized, the flower falls off and the seed grows into a fruit. The fruit serves to help in seed dispersal. Flowering plants can be dicots and monocots. An example of a flowering plant is a sun flower.
REFERENCES
http://www.davidlnelson.md/Cazadero/FourGroupsPlants.htm
http://www.ehow.com/list_7499205_four-phyla-plant-kingdom.html
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