AnswersCO-Biology B-CRUnit Test

Methods of Classification Answers

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1
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Why are some of Carl Linnaeus’s classifications of organisms incorrect?

A
Linnaeus did not study the anatomy of organisms.
B
Linnaeus’s work accounted for evolution.
C
Linnaeus did not use structural comparisons.
D
Linnaeus primarily used physical characteristics.
2
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Why is taxonomy important?

A
Taxonomy allows scientists to analyze DNA and RNA sequences.
B
Taxonomy allows a better understanding of relationships among species.
C
Taxonomy allows the manipulation of genes for medical purposes.
D
Taxonomy allows scientists to use both common names and domains of life.
3

Which is the best definition of a phylogenetic tree?

A
a table of classification that is based only on physical characteristics
B
eight levels of taxonomic categories that are used to classify organisms
C
a branching chart that depicts evolutionary relationships among organisms
D
organisms organized based on structure and genetic comparisons
4

Which identifies the main purpose of biological taxonomy?

A
classify organisms by using common names for easy identification of species by scientists
B
create phylogenetic trees that organize species based only on physical characteristics
C
use a systematic method to name, organize, and show relationships among species
D
create common names that can be applied to multiple organisms found in different regions
5

Which level of taxonomy has the fewest organisms?

A
domain
B
kingdom
C
genus
D
species
6

Consider the phylogenetic tree.Which two organisms are most closely related, based on the tree above?

Question illustration
A
ray-finned fishes and sharks
B
rodents and primates
C
dinosaurs and crocodiles
D
dinosaurs and birds
7

Which evidence did Carl Linnaeus use to classify organisms?

A
physical characteristics
B
evolutionary history
C
physical characteristics and evolutionary history
D
physical characteristics, genetics, and evolutionary history
8

What is binomial nomenclature?

A
a two word system for naming organisms by using the genus and species
B
a two word system for naming organisms by using the family and genus
C
a two word system for naming organisms by using the order and family
D
a two word system for naming organisms by using the domain and species
9

The species that is known as a robin in England has a yellow breast, and another species that is known as a robin in the United States has a red breast. Which statement about common names does this fact best exemplify?

A
More than one common name may be used for the same species.
B
Common names differ among various locations.
C
Different species can share the same common name.
D
Common names do not always translate accurately from Latin to other languages.
10

Which scientific area has the most influence in shaping modern classification methods?

A
physiology
B
anatomy
C
evolution
D
behavior

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