How Does Leaf Structure and Function Work?

A leaf is like a tiny factory that makes food for plants using sunlight, water, and air, all day long!

Leaves are made up of cells, think of them as little workers in the factory. These cells are arranged into layers: one side has lots of stomata, which are like tiny windows that let air in and out. The other side is covered with a waxy layer, like a waterproof coat, so the leaf doesn’t get too wet or dry.

Inside the leaf, there are special cells called chloroplasts, they're like little green chefs who use sunlight to cook up food from water and air (called carbon dioxide). This process is called photosynthesis, and it's how plants grow strong. The more sunlight a leaf gets, the more food it makes!

When it’s time for the plant to rest at night, the windows (stomata) close to save energy, just like you might close your curtains when you go to bed.