Underground storage organs are specialized plant structures that store nutrients and energy, helping the plant survive adverse conditions. Common examples include tubers, like potatoes, and bulbs, such as onions. These organs allow plants to store carbohydrates and other essential compounds, which can be used for growth and reproduction. These storage organs typically develop from modified stems or roots and are crucial for the plant's life cycle. During unfavorable conditions, such as drought or winter, the plant can rely on these reserves to sustain itself until conditions improve. This adaptation is vital for many perennial plants and contributes to their survival.