Where in the "Tree of Life" will current organisms be located that are most closely related to the common ancestor of all life on Earth?
A) at the branch between animals and plants
B) very close to the root
C) at the branch between Archaea and Eukarya
D) very far from the root

Question

Quizplus · Accepted Answer

The common ancestor of all life on Earth is believed to be a simple single-celled organism, and current organisms that are most closely related to that ancestor would also be simple single-celled organisms. Therefore, they would be located very close to the root of the "Tree of Life".

Where in the "Tree of Life" Will Current Organisms Be