Lecture 3 - 03:26 Stem Support Conduction Storage...

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03:26 Stem Support Conduction Storage  Photosynthesis  Stem Tissues - conduction Monocot plants Vascular bundles Vessels that go through the main body of the plant to all of its organs to transport foods  Bundle sheath  Dicot Ring of separate vascular bundles Herbaceous  Woody dicot stems Annual rings (to count age of tree)  Secondary xylem  Storage Modified stem for storage  Potatoes  Has branches coming out of it and shoots 
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Dahlias – modified stem  Temperate climates  Blossom every year  Gladiolus corms are short swollen stems bearing dry leaf bases. Ridges are corm’s  surface are nodes  Another example = onion, iris  Examples: Strawberry – runners (above ground modified stem) Ginger – risens ( underground modified stem) Potato, onion Gladiolus Sweet potato  Carrot  Leaves – roles:  Photosynthesis Storage  Conduction  Leaf Structure Varies Sometimes plants get too much water and get guttation  An exudation caused by root pressure  Leaves – Morphology
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Lecture 3 - 03:26 Stem Support Conduction Storage...

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