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Plant Diversity.

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Presentation on theme: "Plant Diversity."— Presentation transcript:

1 Plant Diversity

2 Plant Divisions/groups
Based on 3 important features Water-conducting (vascular) tissues Seeds Flowers (seeds enclosed in fruit)

3 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

4 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)

5 Cone-bearing plants 760 species
Flowering plants 235,000 species Ferns and their relatives 11,000 species Mosses and their relatives 15,600 species

6 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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8 Vascular tissue Made of tube-like elongated cells through which water and minerals are transported. Include xylem & phloem

9 2. Seedless vascular plants
Include club mosses, horsetails, and ferns. Have roots, leaves, stems Reproduce using spores

10                                                                                            Club mosses Horse tails Ferns

11 3. Gymnosperms Bear their seeds in cones
Seed includes embryo, food supply, & protective seed coat Seed coat Embryo Stored food supply Seed Wing

12 Examples Cycads Gnetophytes Conifers Gingko

13 4. Angiosperms Reproductive flowers Seeds are enclosed in fruit
Most common plant group

14 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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18 Types of Roots Tap Fibrous


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