Which one of the following is a modified stem?
- ACarrot
- BSweet Potato
- CCoconut
- DPotatoCorrect
Explanation
Potato is the correct answer because it is a tuber, which is a specialized type of underground modified stem used by the plant for storing nutrients and for vegetative reproduction. You can identify it as a stem because it possesses nodes or eyes from which new shoots can grow.
In contrast, carrots and sweet potatoes are modified roots, specifically taproots and adventitious roots respectively, designed for food storage. A coconut is a fruit, specifically a fibrous drupe, and not a stem or root.
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