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Tree parts and functions

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by

Robin McLean

on 7 October 2015

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Transcript of Tree parts and functions

Crown
leaves and branches at the top of a tree
important role in filtering dust and other particles from the air
cool the air by providing shade
reduces the impact of raindrops on the soil below
Trunk
supports the crown
gives the tree its shape & strength
four layers of tissue
Cross section of a tree
Roots
absorb water and nutrients from the soil
store sugar
anchor the tree upright in the ground
All trees have lateral roots which branch into smaller and smaller roots
Some trees have tap roots that reaches down as far as 15 feet
Roots can extend 3-4 times the tree height
Each root covered with thousands of root hairs
(make it easier to soak up water & dissolved minerals from the soil)
90% of root system located in
first 18-24" of soil
"Parts of a Tree." North Carolina Forestry Association for Teachers. North Carolina Forestry Association, 2015 Web. 1 Oct. 2015.
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