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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 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
Shoot System • Environment: Atmosphere • Functions: • Photosynthesis • Transport • Support • Reproduction • Photo Credit: Doyle Cross, El Yunque Cloud Forest, Puerto Rico 2007
Shoot System • Organs: • Stems • Leaves • Flowers • Photo Credit: Joseph Amana, Biology Student, Lady Bird Johnson Wildflower Center 2005
Growth • Indeterminate growth Grow throughout life • Primary growth • Secondary growth
Meristems • Growth Zones • Apical Meristems • At tips of roots & shoots • Primary Growth
Meristems • Lateral Meristems • Only in woody plants • Cylinder in mature roots and stems • Secondary Growth • Wood • Bark
Vascular Tissue • Xylem • Water • Minerals • Phloem • Organic compounds
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
The End Unless otherwise specified, all images in this presentation came from: Campbell, et al. 2008. Biology, 8th ed. Pearson Benjamin Cummings.