Consider the following pairs of structures: I. Vertebrate hearts II. Sweet potato and potato III. Forelimbs of cheetah and human IV. Wings of butterfly and bird V. Thorns of Bougainvillea and tendrils of Cucurbita How many of the given examples represent divergent evolution?

Step-by-step solution

Divergent evolution results in homologous organs, which share a common ancestry and anatomical plan but are adapted for different functions. I. Vertebrate hearts share a common basic plan and represent homologous organs (divergent evolution). II. Sweet potato (root modification) and potato (stem modification) have different origins but similar functions, representing analogous organs (convergent evolution). III. Forelimbs of cheetah and human share the same fundamental bone structure (humerus, radius, ulna, etc.) a