The common ancestor of all animals is likely to have been a ________.
A)colonial,flagellated protist
B)colonial,ciliated protist
C)colonial,flagellated bacterium
D)sponge

Question

Quizplus · Accepted Answer

The common ancestor of all animals is believed to be a colonial, flagellated protist, similar to modern choanoflagellates, which are considered the closest living relatives of animals.

The Common Ancestor of All Animals Is Likely to Have