Sweet potato tubers can give rise to a new plant due to the presence of
Apical buds
Lateral buds
Adventitious buds
All of these
Adventitious buds: These buds arise at any position except for their normal position. For example, epiphyllous or foliar buds present on the leaf margins in case of Bryophyllum; radical buds present on roots in case of sweet potato, dahlia, etc.
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Sweet potato tubers can give rise to a new plant due to the presence of radical buds, that are the types of adventitious buds.