A bird's wing and a bat's wing are examples of what kind of structure? a. Vestigial structures b. Symatric structures c. Homologous structures d. Analogous structures

The correct answer is **d. Analogous structures**.<br /><br />Here's why:<br /><br />* **Analogous structures:** These are structures that have similar functions but evolved independently in different lineages. A bird's wing and a bat's wing both evolved for flight, but the underlying bone structure and evolutionary origin are different. Birds evolved from feathered dinosaurs, while bats evolved from mammals.<br /><br />* **Homologous structures:** These are structures that share a common evolutionary origin, even if their functions have diverged. For example, the forelimbs of humans, bats, and whales are homologous, even though they are used for different purposes (grasping, flying, and swimming, respectively).<br /><br />* **Vestigial structures:** These are structures that have lost most or all of their original function through evolution. Examples include the human appendix or the pelvic bones of whales.<br /><br />* **Symatric structures:** This isn't a recognized biological term. The term you might be thinking of is *symmetrical*, referring to the balanced proportions of an organism's body. This concept isn't relevant to the comparison of bird and bat wings.<br />