Answers24 - 25 CR - Biology B 0411KBLab: Natural Selection-Standard Bio 4.2

Evolutionary Relationships Answers

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1
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Which of the following are Phylogenetic trees also know as ?

A
Cladogram
B
Clade
C
Node
D
Linnaean
2
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Consider the cladogram.Which group of organisms has the derived characteristics of true tissues, bilateral symmetry, and a pseudocoelom?

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A
sponges
B
roundworms
C
annelids
D
chordates
3

A scientist is trying to determine how closely related a moth species (Species Z) is to four other moth species (Species A, B, C, and D). He examined the DNA of each species and compared it to the study subject. He then created this table.Species# of genetic differences Species A12Species B3Species C14Species D28Which species is most closely related to the moth species (Species Z)?

A
species A
B
species B
C
species C
D
species D
4

Consider the phylogenetic tree of Old World primates.According to the tree, which primates share the most recent common ancestor with humans?

Question illustration
A
gorillas
B
chimpanzees
C
bonobos and chimpanzees
D
bonobos and gorillas
5

Why was modern classification invented?

A
Traditional classification could not classify all living things.
B
Scientists realized related organisms do not share similar characteristics.
C
Scientists understood that species share a common ancestor.
D
Modern classification is faster and easier to use.
6

Which best describes derived characteristics?

A
They are newly evolved traits.
B
They appear in all the ancestors.
C
They appear at the end of each branch.
D
They stem from primary characteristics.
7

According to the cladogram, which organisms are in the smallest clade with birds?

Question illustration
A
crocodiles
B
primates
C
rodents and rabbits
D
sharks
8

If two organisms are in the same clade, what can you predict about their relationship?

A
They are not closely related.
B
They share a common ancestor.
C
They compete for resources.
D
One organism evolved into the other organism.
9

In a cladogram, what occurs at a node?

A
A derived trait appears.
B
Evolution is stopped.
C
An ancestor dies.
D
The cladogram ends.
10

Dr. Digger, a paleontologist, finds a fossil that he describes in his journal.The creature was approximately 1 meter long, with its backbone fused into a large shell covering the body cavity. It had a beaklike mouth, without teeth, and all four limbs were in the form of flippers.Based on anatomical similarities, to which modern animal is Dr. Digger’s creature most closely related?

A
zebra
B
bony fish
C
sea turtle
D
snake

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