Use the following figure to answer the question.

"A" is ________; "B" is ________.

Question

Use the following figure to answer the question.

"A" is ________; "B" is ________.

Quizplus · Accepted Answer

According to the figure, A and B are both shown as branches stemming from a common ancestor at the bottom of the diagram, indicating that they are both descendants of this ancestor. However, B is shown as the last common ancestor of Archaea and Eukarya, which suggests that it is the earliest known organism from which these two groups diverged. On the other hand, A is shown as a more recent species, suggesting that it evolved after the split between Archaea and Eukarya. Therefore, the best choice is D, which states that A is the most recent species to evolve on Earth and B is the last common ancestor of Archaea and Eukarya.

Use the Following Figure to Answer the Question