Answers24 - 25 CR - Biology B 0411KBBiological Evidence and the Fossil Record

Evolutionary Relationships Answers

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1
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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.
2
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Which best describes traditional classification?

A
It is based on shared characteristics.
B
It is based on evolutionary relationships.
C
It is called phylogenetic classification.
D
It is called cladistics.
3

A scientist discovers a new organism that is related to clownfish. What can the scientist discover by using molecular clocks?

A
the date that the organism first appeared in the fossil record
B
the age of the organism
C
the amount of time that the two species have been evolving apart
D
the number of years that fish have existed
4

Consider the diagram.Josiah says this is a phylogenetic tree of the dinosaurs. Maleek says it is a cladogram of the dinosaurs. Who is correct?

Question illustration
A
Josiah is correct.
B
Maleek is correct.
C
Both are correct.
D
Neither is correct.
5

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
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

Consider the cladogram.According to the cladogram, which organisms have roundworms as a common ancestor?

Question illustration
A
mollusks and flatworms
B
sponges and chordates
C
flatworms, sponges, and cnidarians
D
mollusks, echinoderms, chordates, and annelids
9

Which of the following are Phylogenetic trees also know as ?

A
Cladogram
B
Clade
C
Node
D
Linnaean
10

Protists are a group of organisms that are characterized as eukaryotes (they have cells with nuclei) that are neither plants nor animals nor fungi. They are very diverse, and there are many hypotheses about their classification. The cladogram for protists is constantly changing and, sometimes, there are opposite hypotheses that both have data to support them. What is the implication of a changing hypothesis?

A
It is acceptable because data are still being collected.
B
It is acceptable because everything in science should always change.
C
It is not acceptable because the correct answer needs to be found.
D
It is not acceptable because science never changes.

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