The Last Common Ancestor of All Animals was Probably A

Question

The last common ancestor of all animals was probably a
A)unicellular chytrid.
B)unicellular yeast.
C)multicellular algae.
D)multicellular fungus.
E)flagellated protist.

Accepted Answer

The last common ancestor of all animals was likely a flagellated protist, as this group includes the closest living relatives to animals (choanoflagellates) and shares many molecular and genetic similarities with animals. While all of the other options are eukaryotic organisms, there is no evidence to suggest that they are the closest ancestors to animals.