LSU BIOL 1202 (HRINCEVICH) CH. 26 HW LATEST ACTUAL EXAM
WITH VERIFIED QUESTIONS & CORRECT ANSWERS
Question 1.
__________are groups of organisms that share a unique common ancestor not shared by
any other groups.
Correct Answer: sister taxa
Question 2.
The horizontal line indicating a branch on a phylogenetic tree represents ancestral forms
of the named taxon, thereby illustrating the ____________.
Correct Answer: evolutionary lineage
Question 3.
The point at which two or more lineages diverge from their common ancestor is called
a(n) ____________or node.
Correct Answer: branch point
Question 4.
Each branch tip on a phylogenetic tree represents a specific group of organisms known as
a(n) ________.
Correct Answer: taxon
Question 5.
The branching pattern of a phylogenetic tree indicates whether taxa are closely or
distantly related relative to other taxa in the tree. Use this phylogenetic tree to determine
whether each statement is true or false.
1. Fishes and chimps have no common ancestors.
2. Frogs and humans are more distantly related than
are lizards and humans.
3. The taxon that shares the most recent common
ancestor with frogs is fishes.
4. In this tree, lizards are the sister taxon of the lineage
that includes humans and chimps.
Correct Answer: 1. False 2. True 3. False 4. True
Question 6.
Based on this tree, select the correct statement.
A. Taxon A is the sister taxon of the lineage that in-
cludes Taxa B and C.
, B. Taxon F is the common ancestor to all other taxa
shown.
C. Branch point 2 indicates a common ancestor for
Taxa A, D, and E, but not B or C.
D. The sequence of evolution represented on the tree
leads to Taxon A, shown at the top of the tree.
Correct Answer: A. Taxon A is the sister taxon of the lineage that includes Taxa
B and C.
Question 7.
Use the same diagram to determine whether each
statement is true or false.
1. Branch point 1 represents the common ancestor of
Taxa A-F.
2. Taxa D and E arose from a common ancestor and are
sister taxa.
3. Branch point 2 is the common ancestor shared
uniquely by Taxa A, B, and C.
4. Rotating the tree at branch point 2 would change the
relationship between Taxa D and A.
Correct Answer: 1. True 2. True 3. False 4. False
Question 8.
Turtles are not shown on this tree. Turtles are evolutionarily more closely related to lizards
than they are to frogs. Select the phylogenetic tree that best represents the position of
turtles relative to the other taxa shown.
Correct Answer:
https://media.cheggcdn.com/coop/7ca/7ca4bca1-monophylaticgroup.png
Question 9.
Which branch point represents the most recent com-
mon ancestor of all bears?
A. branch point 1
B. branch point 2
C. branch point 3
D. The most recent common ancestor to all living bears
is not shown in this tree.
Correct Answer: A. branch point 1
Question 10.
Which branch point represents the most recent com-
mon ancestor of the sloth bear and the spectacled
bear?
WITH VERIFIED QUESTIONS & CORRECT ANSWERS
Question 1.
__________are groups of organisms that share a unique common ancestor not shared by
any other groups.
Correct Answer: sister taxa
Question 2.
The horizontal line indicating a branch on a phylogenetic tree represents ancestral forms
of the named taxon, thereby illustrating the ____________.
Correct Answer: evolutionary lineage
Question 3.
The point at which two or more lineages diverge from their common ancestor is called
a(n) ____________or node.
Correct Answer: branch point
Question 4.
Each branch tip on a phylogenetic tree represents a specific group of organisms known as
a(n) ________.
Correct Answer: taxon
Question 5.
The branching pattern of a phylogenetic tree indicates whether taxa are closely or
distantly related relative to other taxa in the tree. Use this phylogenetic tree to determine
whether each statement is true or false.
1. Fishes and chimps have no common ancestors.
2. Frogs and humans are more distantly related than
are lizards and humans.
3. The taxon that shares the most recent common
ancestor with frogs is fishes.
4. In this tree, lizards are the sister taxon of the lineage
that includes humans and chimps.
Correct Answer: 1. False 2. True 3. False 4. True
Question 6.
Based on this tree, select the correct statement.
A. Taxon A is the sister taxon of the lineage that in-
cludes Taxa B and C.
, B. Taxon F is the common ancestor to all other taxa
shown.
C. Branch point 2 indicates a common ancestor for
Taxa A, D, and E, but not B or C.
D. The sequence of evolution represented on the tree
leads to Taxon A, shown at the top of the tree.
Correct Answer: A. Taxon A is the sister taxon of the lineage that includes Taxa
B and C.
Question 7.
Use the same diagram to determine whether each
statement is true or false.
1. Branch point 1 represents the common ancestor of
Taxa A-F.
2. Taxa D and E arose from a common ancestor and are
sister taxa.
3. Branch point 2 is the common ancestor shared
uniquely by Taxa A, B, and C.
4. Rotating the tree at branch point 2 would change the
relationship between Taxa D and A.
Correct Answer: 1. True 2. True 3. False 4. False
Question 8.
Turtles are not shown on this tree. Turtles are evolutionarily more closely related to lizards
than they are to frogs. Select the phylogenetic tree that best represents the position of
turtles relative to the other taxa shown.
Correct Answer:
https://media.cheggcdn.com/coop/7ca/7ca4bca1-monophylaticgroup.png
Question 9.
Which branch point represents the most recent com-
mon ancestor of all bears?
A. branch point 1
B. branch point 2
C. branch point 3
D. The most recent common ancestor to all living bears
is not shown in this tree.
Correct Answer: A. branch point 1
Question 10.
Which branch point represents the most recent com-
mon ancestor of the sloth bear and the spectacled
bear?
