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Plant Diversity
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Plant Divisions/groups
Based on 3 important features Water-conducting (vascular) tissues Seeds Flowers (seeds enclosed in fruit)
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Ferns and their relatives
Flowering plants Cone-bearing plants Ferns and their relatives Mosses and their relatives Green algae ancestor Flowers; Seeds Enclosed in Fruit Seeds Water-Conducting (Vascular) Tissue
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Plant kingdom divided into 4 major groups:
Mosses and their relatives (non-vascular plants) Ferns and their relatives (seedless vascular plants) Cone-bearing plants (seed plants-gymnosperms) Flowering plants (seed plants-angiosperms)
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Cone-bearing plants 760 species
Flowering plants 235,000 species Ferns and their relatives 11,000 species Mosses and their relatives 15,600 species
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1. Bryophytes Mosses/ relatives No vascular tissues
Absorb water by osmosis only a few centimeters above the ground Reproduce using spores
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Vascular tissue Made of tube-like elongated cells through which water and minerals are transported. Include xylem & phloem
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2. Seedless vascular plants
Include club mosses, horsetails, and ferns. Have roots, leaves, stems Reproduce using spores
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Club mosses Horse tails Ferns
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3. Gymnosperms Bear their seeds in cones
Seed includes embryo, food supply, & protective seed coat Seed coat Embryo Stored food supply Seed Wing
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Examples Cycads Gnetophytes Conifers Gingko
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4. Angiosperms Reproductive flowers Seeds are enclosed in fruit
Most common plant group
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Flowering plants divided into 2 groups:
Monocotyledons (Monocots) Ex. Wheat, grasses, lilies, corn Dicotyledons (Dicots) Ex. Most trees & shrubs, roses, daisies Cotyledon = seed leaves
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Types of Roots Tap Fibrous
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