NEETZoologyEvolution
Sweet potato and potato perform a similar function of food storage but differ in their structural origin. Which of the following options correctly identifies the type of evolution they represent and their respective anatomical origins?
Options
- ADivergent evolution; both are modified stems
- BConvergent evolution; Sweet potato is a modified stem and potato is a modified root
- CConvergent evolution; Sweet potato is a modified root and potato is a modified stem
- DDivergent evolution; Sweet potato is a modified root and potato is a modified stem
Correct answer
C. Convergent evolution; Sweet potato is a modified root and potato is a modified stem
Step-by-step solution
Sweet potato is a modified adventitious root, whereas potato is a modified underground stem. Because they have different anatomical origins but have evolved to perform the same function (storage of food), they are analogous structures. Analogous structures are a result of convergent evolution, where different structures evolve similarly in response to similar environmental needs or functions. Answer: Convergent evolution; Sweet potato is a modified root and potato is a modified stem