Ch 35 - Ch 35 Plant Structure Growth and Development...

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Ch. 35 : Plant Structure, Growth, and Development Chapter Objectives : Hierarchical organization of plants Meristems : Secondary and Primary Growth Primary Growth Secondary Growth
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Basic Hierarchy Cell Tissue Organ
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The Three Basic Plant Organs o Roots o Stem o Leaves Two types of Systems : Root system Shoot System
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Reproductive shoot (flower) Apical bud Node Internode Apical bud Vegetative shoot Leaf Blade Petiole Stem Taproot Lateral (branch) roots Shoot system Root system Axillary bud
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Figure 35.3
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Specialized Functions of Roots
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Figure 35.4 Prop roots Storage roots “Strangling” aerial roots Buttress roots Pneumatophores
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Stem
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Figure 35.2 Reproductive shoot (flower) Apical bud Node Internode Apical bud Vegetative shoot Leaf Blade Petiole Stem Taproot Lateral (branch) roots Shoot system Root system Axillary bud
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Specialized Functions of Stem
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Figure 35.5 Rhizomes Rhizome Bulbs Storage leaves Stem Stolons Tubers Root Stolon
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Leaves
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Figure 35.6 Simple leaf Axillary bud Petiole Compound leaf Leaflet Axillary bud Petiole Doubly compound leaf Axillary bud Petiole Leaflet Blade
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Specialized Functions of Leaves
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Figure 35.7 Tendrils Spines Storage leaves Reproductive leaves Bracts
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Basic Hierarchy Cell Tissue Organ
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Dermal, Vascular, and Ground Tissues
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Figure 35.8 Dermal tissue Ground tissue Vascular tissue
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Dermal tissue system In nonwoody plants : epidermis & Cuticle In woody plants : periderm replace the epidermis in older regions of stems and roots Trichomes
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Figure 35.9a
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