Refer to the figure showing the wing and support structures (bones) of bat and bird wings. The overall arrangements of the support structures of the bat and bird wings are _______ traits.
A) homoplastic
B) homologous
C) ancestral
D) nonhomologous
E) derived

Question

Refer to the figure showing the wing and support structures (bones) of bat and bird wings.  The overall arrangements of the support structures of the bat and bird wings are _______ traits.
A) homoplastic 
B) homologous 
C) ancestral 
D) nonhomologous 
E) derived

Quizplus · Accepted Answer

The overall arrangements of the support structures of bat and bird wings are homologous traits because they have a common evolutionary origin and are modified to serve the needs of flight in each respective species.

Refer to the Figure Showing the Wing and Support Structures