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Transcript 
Xylem Stem Anatomy
Xylem
Phloem
Cambium
Vascular cambium
Stem Anatomy
Vessel
Element
Tracheid
Vessels and Tyloses
Diffuse, Semi-Diffuse, Ring Porous
Springwood, Latewood, and Heartwood
Phloem Stem Anatomy
Phloem Stem Anatomy
Xylem
Phloem
Cambium
Vascular cambium
Phloem Sieves Cells
Crushed Phloem and Dilated Rays
The Leaf
Top side
Bottom side
Leaf Anatomy
Leaf Anatomy
Sun leaf vs.
Shade leaf
Leaf Anatomy
Pine Needle Leaves
Development of Leaves
Flower and Reproduction
Male and Female Cones
What makes a plant a tree?
Like other plants:
• Trees are autotrophs - meaning they produce
their own food.
• Tree cells have rigid cell walls, a large central
vacuole, and chloroplasts.
The difference is Secondary
Growth!
Secondary Growth means Wood!
Trees and shrubs grow
radially as well as
vertically.
(The difference between
trees and shrubs is size.)
Expanded concept of a tree
Cross Section of Woody Stem
Our secondary growth model:
A typical hardwood
tree in cross section
(transverse surface).
What can you identify?
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