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Published byBertha Atkinson Modified over 9 years ago
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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. 1909
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Identify parts of a tree. Identify 2 main types of trees. Identify different characteristics of leaves.
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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?
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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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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)
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Angiosperm- flowering plant Gymnosperm- non-flowering plant
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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
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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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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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Grow in warmer areas.
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Leaf arrangement Leaf Margins Leaf shape Leaf venation
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Opposite Alternate Whorled
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Looking at the edge of the leaf Serrated Lobed Smooth
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Palmate Linear Cordate Ovate
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The distribution or arrangement of a system of veins in a leaf. Parallel Palmate Pinnate
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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
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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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