Leaf storage and perennating organ is which structure?

• A. Root tuber
• B. Bulb
• C. Corm
• D. Rhizome

Answer: (B)

This item tests how plants store nutrients to survive year to year. A bulb stores food in its fleshy leaves that surround a short stem; those leaves act as the storage tissue and, when conditions are tough, the bulb remains underground so the plant can regrow next season. In contrast, a root tuber stores starch in swollen roots (potatoes) and is derived mainly from root or stem tissue rather than leaves, so it doesn’t fit leaf-based storage. A corm stores food in a compact stem tissue, not in fleshy leaves. A rhizome is an underground stem that stores nutrients and spreads, but its storage is again in stem tissue, not leaves. Therefore, the structure described is a bulb.