When discussing the structure of leaves, it is best to start in the most basic concept: Leaf Type.
A leaf can be either simple or compound.
This concept is determined by determining the position of the bud.
SIMPLE - If the bud is located in the axil (where the petiole attaches to the stem) of a single leaf.
COMPOUND - The leaf is divided into multiple leaflets.
Simple (left) and Compound (right) leaf types
A simple leaf is a single leaf that attaches to the stem.
A palmate leaf is a compound leaf that has smaller leaflets attaching to a common point.
The whole structure is "palm-like" and shaped like the palm of your hand.
A pinnate leaf is a compound leaf that attaches to the stem and is divided into smaller leaflets.
A pinnate leaf can either be even or odd, which is the amount of leaflets contained on the leaf.
As you can see, both the drawing and picture are odd pinnate leaves because they have an odd amount of leaflets.
A bipinnate leaf is a pinnate leaf that is twice divided.
Before you take the quiz, you might want to review for it using the following activity.
The leaf Type will be hidden. See if you can name the Type. Then click the lower lefthand box "term" to see the answer.
A quiz will load up below. If you find that you are not scoring very high, be sure to go back and review.