Question 1

Question

The diagram shows an animal cladogram.

Which table correctly matches the features to the letters labeled on the cladogram?
A.


Letter on Cladogram Feature
W four limbs
X amniotic eggs
Y hair
Z eggs with shells



B.


Letter on Cladogram Feature
W amniotic eggs
X eggs with shells
Y hair
Z four limbs



C.


Letter on Cladogram Feature
W hair
X eggs with shells
Y amniotic eggs
Z four limbs



D.


Letter on Cladogram Feature
W hair
X four limbs
Y eggs with shells
Z amniotic eggs


a. CThis is the correct answer.
b. D
c. B
Selected:d. AThis answer is incorrect.
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Question 2
Analyze the cladograms. What is the best description of these two clads?
identical_clad.jpg

a. Right clade has a different common ancestor for A and B
b. Left clade has a different common ancestor at C.
c. They are identical, there is no difference between the two clades.
This is the correct answer.
Selected:d. The clades are different.
This answer is incorrect.
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Question 3
Four different species of lizards are represented in the following diagram.


Which of the following statements could be true according to the diagram?
a. Species L, M, N, and O exhibit many of the same behavioral patterns.
Selected:b. Species N and O are more closely related than species O and M.

This answer is correct.
c. The amino acids found in species M and N are exactly the same.

d. The biochemical pathways found in species L and M are very different.
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Question 4
Where is the alligator and T. rex's most recent common ancestor?

Quiz image

Selected:a. Point CThis answer is correct.
b. Point A
c. Point D
d. Point B
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Question 5
A student is developing a cladogram of four organisms based on shared characteristics. The characteristics are shown.

Organism Has cells Backbone Legs Fur/Hair Bipedal
Frog Yes Yes Yes No No
Gibbon Yes Yes Yes Yes Yes
Salmon Yes Yes No No No
Lion Yes Yes Yes Yes No

Which organism would MOST LIKELY be at the top of the cladogram?

a. frog
b. salmon
c. lion
Selected:d. gibbon

Answer 1

Here are the answers and explanations for the questions you've provided:

Question 1

You matched features to letters on a cladogram. The correct answer is B.

• W corresponds to amniotic eggs: This feature is specific to reptiles and birds, which appear higher on a cladogram than those without this trait.
• X corresponds to eggs with shells: This is a more derived trait found in certain reptiles and birds specifically.
• Y corresponds to hair: Hair is a defining characteristic of mammals.
• Z corresponds to four limbs: This is a basal characteristic found in all tetrapods.

Question 2

The best description of the two clads is c. They are identical, there is no difference between the two clades. The reason is that if they are visually represented as identical, they share the same common ancestors and character states.

Question 3

Species N and O being more closely related than species O and M is the valid option as they would share more recent common ancestry if they appear on a cladogram closer together.

Question 4

Your answer of a. Point C is correct because that point indicates the most recent common ancestor shared by the alligator and T. rex.

Question 5

The organism that would most likely be at the top of the cladogram is d. gibbon. This is because the gibbon has all the characteristics listed (cells, backbone, legs, fur/hair, bipedal), making it the most derived.

If you have more questions or need further clarification, feel free to ask!