Question

Both potato tuber and radish are underground organs. Why is the former called a stem but later called a root?

Answer 1

Buds and shoots arise from the top or crown, and fibrous roots are found on the bottom of the tuberous stem. In addition, some plants, such as the dahlia and the sweet potato, produce an underground storage organ called a tuberous root, which is often confused with bulbs and tubers

Answer 2

radish arise from radicle(root) part of seed and modified to store food whereas potato is modification of stem to store food