Chapter 36 - Chapter 36 Plant Form I. Meristems Cells that...

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Chapter 36 Plant Form I. Meristems Cells that produce new cells by mitosis, which later become part of the plant body A. Apical meristems 1. stem and root tips 2. primary growth = stem and root elongation 3. Primary meristems are produced by apical meristems These give rise to three types of embryonic tissue a. protoderm – forms epidermis b. procambium – forms vascular tissue c. ground meristem = ground tissue = everything else B. Lateral meristems - responsible for secondary growth – increased girth This type of growth is most evident in woody plants Woody plants have two lateral meristems 1. Cork cambium – produces cork tissue of the outer bark 2. vascular cambuim – meristem found just below the bark that produces secondary vascular tissue I I. Organization of the Plant Body
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root system 1. Supports 2. Anchors 3. Penetrates soil 4. Absorbs water and ions B. shoot system Stem and leaves Support leaves, flowers, and fruit C. Plant tissues 1. Dermal tissue – protoderm a. epidermis forms outer protective covering in plants with primary growth b. cuticle- fatty layer, waxy, prevents water loss c. Bark is protective layer in woody plants d. Guard cells – flank the stoma Site of gas exchange Site of water loss Regulate stoma e. Trichomes – hairlike outgrowth of the epidermis
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Chapter 36 - Chapter 36 Plant Form I. Meristems Cells that...

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