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Plant Structures and Growth

Plant Structures and Growth . BIOL 1407. Root System. Environment: Soil Functions: Anchorage Absorbs water and minerals Transport Photo Credit: Rasbak van TeunSpaans, Wikimedia Commons. Root Hairs. Close to tip of root Extensions of epidermal cells ↑ surface area ↑ absorption.

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Plant Structures and Growth

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  1. Plant Structures and Growth BIOL 1407

  2. Root System • Environment: Soil • Functions: • Anchorage • Absorbs water and minerals • Transport • Photo Credit: Rasbak van TeunSpaans, Wikimedia Commons

  3. Root Hairs • Close to tip of root • Extensions of epidermal cells • ↑ surface area • ↑ absorption

  4. Shoot System • Environment: Atmosphere • Functions: • Photosynthesis • Transport • Support • Reproduction • Photo Credit: Doyle Cross, El Yunque Cloud Forest, Puerto Rico 2007

  5. Shoot System • Organs: • Stems • Leaves • Flowers • Photo Credit: Joseph Amana, Biology Student, Lady Bird Johnson Wildflower Center 2005

  6. Growth • Indeterminate growth  Grow throughout life • Primary growth • Secondary growth

  7. Meristems • Growth Zones • Apical Meristems • At tips of roots & shoots • Primary Growth

  8. Meristems • Lateral Meristems • Only in woody plants • Cylinder in mature roots and stems • Secondary Growth • Wood • Bark

  9. Root Tip

  10. Dicot Root X-Sec

  11. Stele of Dicot Root

  12. Shoot Tip

  13. Dicot Stem X-Sec

  14. Dicot Leaf X-Sec

  15. Lower Epidermis of Leaf

  16. Vascular Tissue • Xylem • Water • Minerals • Phloem • Organic compounds

  17. Xylem

  18. Phloem

  19. Plant Videos • http://www.youtube.com/watch?v=aNjR4rVA8to&feature=related • Carnivorous Plants: http://www.youtube.com/watch?v=LoLJSMOsPCg • http://www.youtube.com/watch?v=ktIGVtKdgwo&feature=related • http://www.youtube.com/watch?v=trWzDlRvv1M&feature=related

  20. The End Unless otherwise specified, all images in this presentation came from: Campbell, et al. 2008. Biology, 8th ed. Pearson Benjamin Cummings.

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