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Plant Diversity Essential Question: What characteristics of flowering plants make them most successful at reproducing?
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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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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 and their relatives No vascular tissues
Absorb water by osmosis close to the ground keeps them small Rely on water to allow sperm (in spores) to swim to egg
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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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2. Seedless vascular plants
Include club mosses, horsetails, and ferns. Have true roots, leaves, and stems Reproduce using spores and require water
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Club mosses Horse tails Ferns
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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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3. Gymnosperms Cone-bearing plants
Bear their seeds directly on the surface of cones Seed includes embryo, food supply (endosperm), & protective seed coat Seed coat Embryo Stored food supply Seed Wing
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Examples Cycads Gnetophytes Conifers Gingko
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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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4. Angiosperms Develop unique reproductive organs known as flowers
Seeds are enclosed in fruit
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Flowering plants divided into 2 groups:
Monocotyledons Ex. Wheat, grasses, lilies, bamboo, corn Dicotyledons Ex. Most trees & shrubs, roses, daisies Cotyledon = embryonic seed leaf
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Monocot vs Dicot Roots Tap Fibrous
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Monocot vs Dicot Stems Asparagus Alfalfa
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Monocot vs Dicot Stems Zea Mays Ranunculus
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