We All Need Trees A lesson on product origin 54PG1 Demonstrate an emergent awareness for conservation recycling and respect for the environment ID: 770103
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We All Need Trees A lesson on product origin 5.4.P.G.1 Demonstrate an emergent awareness for conservation, recycling, and respect for the environment. 5.4.2.G.4 Identify the natural resources used in the process of making various manufactured products. Kirk Weber Nick Vos-Wein
Where would we be without wood ?
Product Origins Cellulose Fruits, leaves, & Seeds Bark Wood & saps
What is cellulose? cell wall plant cell cellulose macrofibril mic ro fibril
Stuff of Cellulose paper rayon insulation cellophane shampoo and other products that need to be thickened lipstick sponge (non-poriferan)
Product Origins Cellulose Wood & saps Fruits, leaves, & Seeds Bark
What is wood? sapwood (xylem) heartwoodouter barkinner bark (phloem) pith (1 st year growth)
Tree Fluids Sap About 97-99% water, 1-3% sugar and dissolved nutrients Produced in the leaves in vascular plants, utilized by living cells in the cambium and leaves
Tree Fluids Latex White, milky substance thought to be a defense against bacteria, fungi, and herbivorous organisms Found in trees native to the tropics: Hevea brasiliensis (rubber tree) , Castilla elastica (Panama rubbertree ) * Manilkara zapota (sapodilla tree) * produces chicle
Resins Thought to be a defense against herbivorous organisms Found in several families: Pinaceae (pines), Leguminosae (legumes, plants w/pods), Anacardiaceae (sumacs & cashew) Amber is an fossil resin found Frankincense and myrrh well-known examples of gum resins Tree Fluids
Edible Examples