Question

A student grouped animals into two separate groups based on a characteristic shared by all of the animals in each group. The two groups are shown below.

What characteristic did the student most likely use to group the animals?
A.
presence or absence of lungs
B.
prokaryotic or eukaryotic
C.
autotrophic or heterotrophic
D.
presence or absence of backbone

Answer 1

D

Step-by-step explanation:

All of the animals on the left are vertebrates, or in other words, they have a backbone. The animals on the right are invertebrates or without a backbone. Hope this helps!

Answer 2

D. presence or absence of a backbone