tree anatomy - gloucester county, virginia anatomy megan ketchum virginia cooperative extension....
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OBJECTIVES:Learn structure and function of tree partsIdentify key termsUnderstand the interaction of structure and function in tree biologyHands-on twig identification
AGENDA:Overview Tree Structure
Plant vs. AnimalTree ClassificationsHow Trees Grow
Tree PartsCrown: Leaves, Stems, Branches, BarkTrunk: Xylem, PhloemRoot: Meristem, Root hair, Mycorrhizae
Key Concepts/Take Home Message
TREE STRUCTURE
Monocot vs. Dicot
Bonus Questions:Are pine trees monocots or dicots?Do all dicots flower?If monocots don’t have wood how do they support themselves?
WHAT MAKES A TREE A TREE?Heights at least 4.5 meters (about 15 feet)Single dominant woody stem (trunk or bole)Capable of diameter growthPerennial plant (present at all seasons of the year)
TREE FORM
ExcurrentDecurrent
Do you see a connection between the habit of leaf loss and the growth pattern?
KEY CONCEPTS/ TAKE HOME MESSAGE
AutotrophsPhotosynthesisHormonesMeristemIndeterminate growthArchitectural designTrophismAllelopathic
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