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PLANT CLASSIFICATIONS

PLANT CLASSIFICATIONS. ALGAE. Simple (no roots, leaves, or stems) autotrophic (make their own food) organisms and all aquatic Single celled or multicelluar Range from tiny single celled algae to giant kelps and seaweeds Found in fossils dating back 3 billion years. Bryophytes.

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PLANT CLASSIFICATIONS

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  1. PLANT CLASSIFICATIONS

  2. ALGAE • Simple (no roots, leaves, or stems) autotrophic (make their own food) organisms and all aquatic • Single celled or multicelluar • Range from tiny single celled algae to giant kelps and seaweeds • Found in fossils dating back 3 billion years

  3. Bryophytes • Mosses and Liverworts • Small, simple (lack of vascular system) autotrophic organisms • Mosses have root-like, stem-like, and leaf-like structures • Live in moist but NOT aquatic environments

  4. Pteridophytes • Ferns • Underground stem or rhizome and compound leaves • Vascular system for transporting water and organic material • Xylem transports water and minerals • Phloem transports organic material

  5. Gymnosperms • Development of the seed • Do not bear true fruit, rather have cones for seed dispersal • Woody tissues for transportation • The Greek word “gymno” means naked (referring to the seed)

  6. Angiosperms • Produces seeds covered in flower or fruit • Make up 80% of the plants on earth • Two types: Monocots (one nutrient storage area, the cotyledon and the flower is in groups of three) and Dicots (two nutrient storage areas – cotyledons and the flower is in groups of two, four, or five)

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