Question

Odd one out carrot, onion, radish, turnip

Answer 1

onion

because all others are modifications of root but onion is modification of leaves.

Answer 2

The odd one out is Onion

Explanation:

• Unlike carrot, radish and turnip , Onion is not a root but a stem that is modified.  
• Onion is considered as a ‘bulb’ or a changed stem which is modified according to the environment.
• The carrot, turnip and radish belong to the root family.
• Onion, though grows underground like carrots, radishes and other root vegetables, it is not actually a root but a stem.
• Onion also belongs to the grass family but carrots do not.