Question

which of the following does not contain structures homologous to the human arm?
bat wing
bird wing
tiktaalik fin
dragonfly wing
turtle flipper

Explanation:

Homologous structures share a common embryonic origin. Bat wings, bird wings, Tiktaalik fins, and turtle flippers are all tetrapod structures with similar bone arrangements to the human arm, derived from a common ancestor. Dragonfly wings are insect structures (arthropod exoskeletons) with no shared embryonic origin with the human arm, so they are not homologous.

Answer:

dragonfly wing