Question

which of these are most likely homologous structures?
bat wing

dragonfly wing

tyrannosaurus arm

bat wing and dragonfly wing
bat wing and tyrannosaurus arm
dragonfly wing and tyrannosaurus arm
bat wing, dragonfly wing, and tyrannosaurus arm

Explanation:

Homologous structures are anatomical features in different species that share a common evolutionary origin, even if their functions differ. Bats (mammals) and Tyrannosaurus (reptiles, dinosaurs) are both vertebrates. A bat's wing and a Tyrannosaurus' arm have similar bone structures (like the humerus, radius, ulna, etc.) due to a common ancestor, showing homology. Dragonfly wings (insect, exoskeleton - based, no bones) are analogous (similar function, different origin) to bat wings, not homologous. So bat wing and Tyrannosaurus arm are homologous.

Answer:

B. bat wing and Tyrannosaurus arm