 The leaf is a part of the plant that is charge of making food for the plant.
 99% of the photosynthesis is done here.
 Leaves can be used to identify trees by looking at the leaf’s characteristics.

Types of Leaves?
 Leaves can either be broad and flat or scalelike/needlelike

Types of Broad Leaves
 Broad leaves are either simple or compound

Shapes of Simple
Leaves

Shapes of Compound Leaves

Parts of the Leaves
 Petiole - a thin stalk that connects the blade of the leaf to the plant's stem.
 Blade - a thin, flat part of the leaf that extends off the end of the petiole.
 Veins - contain vascular tissue and transport food, water, and minerals




Lobe - rounded or pointed section of a leaf
Margin – the border or edge of a leaf; there are many different types
Base – the bottom part of the leaf
Leaflet – one of the small leaves on a compound leaf

Leaf Information lobe
Simple leaf
Compound leaf

Leaf Arrangement on
Stem

Simple Leaves - Margin
Structure

Leaf Venation
 How veins are arranged on the leaf

Basic Leaf Base
Shapes
V-Shaped Rounded Flat Heart Shaped Uneven

Show What You
Learned
Simple or Compound?
Simple

Show What You
Learned
Leaf venation?
Palmate

Show What You
Learned
Leaf margin?
Lobed

Show What You
Learned
Leaf arrangement on stem?
Opposite