Define/Explain: Bulb.

(N/A) $Bulb$ is a modified underground stem that serves as a perennating and storage organ in certain plants.
It consists of a short, disc-like stem (the basal plate) from which fleshy, scale-like leaves emerge.
These scale leaves store food, which helps the plant survive during unfavorable conditions.
Adventitious roots grow from the lower surface of the basal plate.
Examples include $Allium \text{ } cepa$ (onion) and $Allium \text{ } sativum$ (garlic).