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Plant Diversity

Plant Diversity. Essential Question: What characteristics of flowering plants make them most successful at reproducing?. Flowering plants. Cone-bearing plants. Ferns and their relatives. Flowers; Seeds Enclosed in Fruit. Mosses and their relatives. Seeds.

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Plant Diversity

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  1. Plant Diversity Essential Question: What characteristics of flowering plants make them most successful at reproducing?

  2. Floweringplants Cone-bearingplants Ferns andtheir relatives Flowers; SeedsEnclosed in Fruit Mosses andtheir relatives Seeds Water-Conducting(Vascular) Tissue Green algaeancestor

  3. Cone-bearing plants760 species Floweringplants235,000 species Ferns andtheir relatives11,000 species Mosses andtheir relatives15,600 species

  4. 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

  5. Floweringplants Cone-bearingplants Ferns andtheir relatives Flowers; SeedsEnclosed in Fruit Mosses andtheir relatives Seeds Water-Conducting(Vascular) Tissue Green algaeancestor

  6. 2. Seedless vascular plants • Include club mosses, horsetails, and ferns. • Have true roots, leaves, and stems • Reproduce using spores and require water

  7. Club mosses Horse tails Ferns

  8. Floweringplants Cone-bearingplants Ferns andtheir relatives Flowers; SeedsEnclosed in Fruit Mosses andtheir relatives Seeds Water-Conducting(Vascular) Tissue Green algaeancestor

  9. Seed coat Seed Embryo Wing Storedfood supply 3. Gymnosperms • Cone-bearing plants • Bear their seeds directly on the surface of cones • Seed includes embryo, food supply (endosperm), & protective seed coat

  10. Examples Cycads Gnetophytes Conifers Gingko

  11. Floweringplants Cone-bearingplants Ferns andtheir relatives Flowers; SeedsEnclosed in Fruit Mosses andtheir relatives Seeds Water-Conducting(Vascular) Tissue Green algaeancestor

  12. 4. Angiosperms • Develop unique reproductive organs known as flowers • Seeds are enclosed in fruit

  13. Flowering plants divided into 2 groups: • Monocotyledons • Ex. Wheat, grasses, lilies, bamboo, corn • Dicotyledons • Ex. Most trees & shrubs, roses, daisies Cotyledon = embryonic seed leaf

  14. Monocot vs Dicot Roots Tap Fibrous

  15. Monocot vs Dicot Stems Asparagus Alfalfa

  16. Monocot vs Dicot Stems Zea Mays Ranunculus

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