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

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Simple or Compound?

Simple

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Leaf venation?

Palmate

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Leaf margin?

Lobed

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Leaf arrangement on stem? Opposite

Leaf Parts