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 Only 10% of virgin forest left in US  Arkansas originally had 33.6 million acres of forest now 17.25 acres.  Arkansas’ first national forest est.

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Presentation on theme: " Only 10% of virgin forest left in US  Arkansas originally had 33.6 million acres of forest now 17.25 acres.  Arkansas’ first national forest est."— Presentation transcript:

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2  Only 10% of virgin forest left in US  Arkansas originally had 33.6 million acres of forest now 17.25 acres.  Arkansas’ first national forest est. 1909

3  Identify parts of a tree.  Identify 2 main types of trees.  Identify different characteristics of leaves.

4  Why do we need to know the parts of a tree?  Why is it important to be able to know the different types of trees?  Why do we need to know the different characteristics of leaves?

5  What are the parts of a tree?  What are the 2 main types of trees?  What are the different characteristics of leaves?

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15  Coniferous- type of tree that does lose its leaves at different time of the year. (angiosperm)  Deciduous- type of tree will not lose its leaves or needles in the winter (gymnosperm)

16  Angiosperm- flowering plant  Gymnosperm- non-flowering plant

17 1. Broadleaf Trees – known for their autumn color, bare branches in winter, and spring flowers, which can develop into fruit 2. Needle leaf Trees – have needlelike or scale like leaves and plain flowers that develop into cones. Most are evergreens. 3. Palms – with pandanus and lily trees, make up are group of mainly tropical trees. Most palms have huge leaves and no branches

18  Long growing season  Plentiful rainfall  “Hardwood forest”  EX: Ash, Aspen, Beech, Birch, Cottonwood, Elm, Hackberry, Live Oak, Maple, Myrtle, Oak, Sweet gum, Willow

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20  Grow where there are long, cold winters  Some needleleaf forests grow in warmer areas = Southeastern U.S.  “Softwood forests”  EX: Pine, Cedar, Fir, Cypress, Juniper, Spruce, Redwood

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22  Grow in warmer areas.

23  Leaf arrangement  Leaf Margins  Leaf shape  Leaf venation

24  Opposite  Alternate  Whorled

25  Looking at the edge of the leaf  Serrated  Lobed  Smooth

26  Palmate  Linear  Cordate  Ovate

27  The distribution or arrangement of a system of veins in a leaf.  Parallel  Palmate  Pinnate

28  Blade/leaf- main photosynthesis organ of most plants.  Virgin forest- untouched forest usually old growth  Snag- standing dead trees  Duff- blanket of twigs and needles left after cutting  Slash- limbs, treetops, and other waste left after cutting

29  What are the parts of a tree?  What are the 2 main types of trees?  What are the different characteristics of leaves?


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