Gas Exchange in Plants
Gas Exchange in Plants is how leaves take in carbon dioxide and release oxygen through tiny pores.
Think of it this way
A screen door has tiny holes that let air pass through. Fresh air flows in one side while stale air moves out the other side. A leaf works the same way. Small pores let carbon dioxide in and let oxygen out at the same time.
Explaining gas exchange in plants by grade level
Plants breathe through small holes in their leaves. They pull in air and push out fresh air. A water plant like elodea makes bubbles of clean air. You can see the bubbles rise in the water.