Leaves



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
Leaf Parts