What part of a plant is a bulb?

A bulb is a specialized underground storage organ of a plant, typically composed of a short stem surrounded by fleshy, modified leaves. These leaves store nutrients and energy, allowing the plant to survive adverse conditions and regrow in the following season. Common examples of bulbs include onions, tulips, and daffodils. They serve as a means of asexual reproduction and help the plant to thrive in varying environments.