Multiple choice general knowledge How do we better know the commonly used vegetable "Allium Cepa"? Onion Potato Garlic Carrot Reveal answer Fill a bubble to check yourself A Correct answer Explanation Allium cepa is the scientific (botanical) name for the common onion. The Allium genus includes garlic, leeks, and chives, but Allium cepa specifically refers to the onion plant used worldwide in cooking.