Problem
The evolutionary tree below shows the relationships between three groups of organisms: fish, amphibians, and reptiles.
A diagonal line starts at the bottom of a diagram and travels up and to the right. It is labeled reptiles at the top. Two diagonal lines branch off of this main line and travel up and to the left until they reach the same level as the top of the main line. The shorter of these lines branches off near the top and is labeled amphibians. A slightly longer line branches off near the bottom and is labeled fish. The point where the longer line branches off from the main line is labeled A. The point where the shorter line branches off from the main line is labeled B. A point on the main line between point B and the top is labeled C.
A diagonal line starts at the bottom of a diagram and travels up and to the right. It is labeled reptiles at the top. Two diagonal lines branch off of this main line and travel up and to the left until they reach the same level as the top of the main line. The shorter of these lines branches off near the top and is labeled amphibians. A slightly longer line branches off near the bottom and is labeled fish. The point where the longer line branches off from the main line is labeled A. The point where the shorter line branches off from the main line is labeled B. A point on the main line between point B and the top is labeled C.
Which part of the evolutionary tree represents the common ancestor of fish, amphibians, and reptiles?
Choose 1 answer:
Choose 1 answer:
(Choice A) the branch point labeled A
A
the branch point labeled A
(Choice B) the branch point labeled B
B
the branch point labeled B
(Choice C) the part of the branch labeled C
C
the part of the branch labeled C
3 answers
1 answer