The arms of humans and the flippers of dolphins have a similar bone structure. So, they’re _______ organs. The legs of a kangaroo and the legs of a jumping spider allow both organisms to jump. However, spiders are invertebrates, and kangaroos are vertebrates. This difference makes their legs ______ structures.
1)A. analogous B. homologous C. vestigial
2)A. analogous B. homologous C. vestigial