biology lesson 1.5
TRANSCRIPT
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Lesson 1.5 Broadleaf trees are trees with basic leaf shape of broad and flat
Are perenials
mostly dicot angiosperm
largest in size of all plants
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AmericanSycamoreTree isAmerica’s Largest BroadleafDeciduous Tree
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California Redwood •Largest tree in world.
•General Sherman treeis the largest of them.
•Shed leaves in fall.
•Leaves are needle-like not broadleafed
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Lesson 1.5 Broadleaf trees
examples – oaks, maples, elms, etc.
also referred to as hardwoods because of their dense hard wood
mostly deciduous
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Lesson 1.5 Broadleaf trees
Deciduous vs. Evergreens
Deciduous trees loose their leaves all at once.
Ex. Oaks,Maples
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Lesson 1.5 Broadleaf trees
Deciduous vs. Evergreens
Evergreens loose their leaves a little at the time and stay green year round. Ex. pines
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Structure of Broadleaf Trees:
crown – bushy head formed by leaves at top
trunk – main stem have woody stem
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Structure of Broadleaf Treesbranches – where stem divides at top
bark – rough protective layer of stem, branches, and sometimes roots
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Flowers of Broadleaf Trees
Angiosperms – they do produce flowers
Some are decorative hardwoods = dogwood, magnolia
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Flowers of Broadleaf Trees
most have small tiny flowers or catkins which are long, droopy, tassel-like clusters of flowers