Why is it important to seal the plastic bags with a potato inside?

Sealing plastic bags with a potato inside helps to maintain moisture levels and create a humid environment, which is beneficial for certain plant propagation methods. It prevents the potato from drying out, allowing it to sprout and produce shoots more effectively. Additionally, this method can help reduce the risk of mold and bacterial growth by limiting exposure to air. Overall, it promotes healthier growth and increases the likelihood of successful propagation.