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Sweet potato is homologous to
A
Ginger
B
Turnip
C
Potato
D
$Colocasia$
Detailed Solution
Homologous organs have the same origin (same basic structure) although their functions may differ.
Sweet potato is a modified root (a swollen adventitious root that stores food).
Turnip is also a modified root (a swollen tap root that stores food), so the two are homologous.
Ginger (rhizome), potato (stem tuber) and $Colocasia$ (corm) are modified underground stems; they are only analogous to sweet potato.
Hence sweet potato is homologous to turnip.
Sweet potato is a modified root (a swollen adventitious root that stores food).
Turnip is also a modified root (a swollen tap root that stores food), so the two are homologous.
Ginger (rhizome), potato (stem tuber) and $Colocasia$ (corm) are modified underground stems; they are only analogous to sweet potato.
Hence sweet potato is homologous to turnip.