The Wings of a Bird and the Wings of a Bat

question 68

Multiple Choice

The wings of a bird and the wings of a bat both form from the front appendages (arms) . The bird wing is covered by feathers and the bat wing consists of a thin layer of skin stretched between the "finger" bones. Are the wings of the bird and bat homologous or analogous?

• A)homologous because they evolved from the same body part
• B)analogous because birds' flight requires feathers and bats use skin; both are wings, but they evolved differently
• C)both; they are homologous because they both evolved from a front appendage, but analogous because they evolved differently
• D)neither, because birds and bats do not share a recent common ancestor