Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.
- Homology, convergent
- Analogy, divergent
- Analogy, convergent
- Homology, divergent
Answer
(3) Analogy, convergent
Solution
Sweet potato is a modified root and potato is a modified stem — different origin (anatomy) but the same function, i.e. storage of food.
⇒ Structures with different origin but similar function are analogous.
⇒ As per NCERT, analogous structures are a result of convergent evolution; sweet potato (root modification) and potato (stem modification) is an example of analogy.
∴ Analogy, convergent.
Answer: (3)