Leaf:

A leaf (leaves in plural) is the part of a plant where water and minerals are tranformed into food for the plant. This process is called PHOTOSYNTHESIS .

There are many types of leaves and there are many ways to classify them:

• According to the shape

• According to the veins

• According to the margins

• According to the color

• ...

We are going to classify them according to the edges...

For us we are going to make 7 groups:

• Entire: The margins of these leaves are smooth.

• Ondulate (or sinuate): The margins of these leaves look like waves.

• Serrate: The margins of these leaves look like a saw. A saw is that machine you use to cut wood or iron.

• Lobed: The margins of these leaves are similar to the ondulate ones but with much bigger waves.

• Spiny: The margins of these leaves have little thorns.

• Crenate: The margins of these leaves look like several circles one close to each other.

• Palmate: The margins of these leaves look like several leaves together.