What happens when damaged seeds are dropped in water?

Seeds that have been damaged float in water. This is due to the fact that damaged seeds frequently contain pockets of air or have a lower density than healthy seeds. 

The ability of seeds to float in water can be used to identify damaged seeds in a simple manner. Seed quality is important in agriculture because damaged seeds may not germinate or grow properly, resulting in lower crop yields. 

Farmers can increase the chances of successful crop germination and growth by removing floating, damaged seeds.