Below: http://www.kidzone.ws/plants/trees.htm
http://gradesix.mrpolsky.com/science-partsofatree.html
mrpolsky
Parts of a Tree - Trees & Forests - Science Grade 6
Roots
- Absorb water and nutrients from soil
- Store sugar and anchor the tree in the ground
Trunk/Stem
- Supports the grown and gives the tree its shape and strength
Consists of a network of tubes that run between the roots and leaves
This is how nutrients from the soil reach the leaves
Crown
- Leaves and branches at the top of the tree
Bark [Outer bark and Inner Bark]
- Outer Bark protects the tree from insects extreme temperature, disease and storms
- Inner barks (phloem): Caries sugar and nutrients (sap) from the leaves to the rest of the tree.
Cambium
- Between the outer bark and the inner bark
- A very thin layer of growing tissue that produces new cells, xylem, phloem or more cambium.
Xylem or Sapwood
- has a network of thick walled cells that bring water and nutrients up from the roots to the leaves and other parts of the tree.
Heartwood
- As the tree grows, Xylem cells die to form the heartwood.
- The heartwood supports the tree to give it its strength.
http://www.arboriculture.international/environmental
