AP BIOLOGY

Detailed explanation-1: -Examples of Analogous Structures. The wings of a bird and of an insect are analogous organs. Both of these species have wings that they use for flight and yet their wings came from dissimilar ancestral origins.

Detailed explanation-2: -Analogous organs are those organs that have some superficial resemblance, perform similar functions and yet, have different evolutionary origins and hence, different anatomical structures.

Detailed explanation-3: -Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants.

Detailed explanation-4: -These are called analogous structures. Figure 20.2A. 1: Analogous structures: The (c) wing of a honeybee is similar in shape to a (b) bird wing and (a) bat wing, and it serves the same function. However, the honeybee wing is not composed of bones and has a distinctly-different structure and embryonic origin.

Detailed explanation-5: -When two or more organs or structures are basically similar to each other in construction but are modified to perform different functions, they are said to be serially homologous. An example of this is a bat’s wing and a whale’s flipper.