The wings of a butterfly and a bat are analogous, meaning they share similar functions but do not have a common evolutionary origin.
Examples of analogous structures include:
1. Butterfly wings and bird wings may appear similar, but they are not anatomically alike, despite serving similar functions.
2. The eyes of an octopus and mammals differ in retinal position, lens structure, and the origin of various eye components.
3. The flippers of penguins (birds) and dolphins (mammals) are analogous structures.
4. The storage of food in the form of starch in sweet potatoes (root modification) and potatoes (stem modification) is another example of analogous structures.