Which of the Following is Not Considered an Adaptation That

Question

Which of the following is not considered an adaptation that benefits flight in birds?
A)lack teeth
B)small gonads, except during the breeding season
C)no urinary bladder
D)small pectoral muscles
E)most species have one ovary

Accepted Answer

Small pectoral muscles would not benefit flight, as these are the muscles responsible for moving the wings during flight. Therefore, smaller pectoral muscles would hinder a bird's ability to fly. The other adaptations listed, such as lack of teeth, one ovary, and no urinary bladder, are all adaptations that benefit flight by reducing weight and increasing efficiency. Small gonads except during breeding season also reduce weight and increase energy efficiency.