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Biology, 6/e
Author Dr. George B. Johnson, Washington University
Author Dr. Peter H. Raven, Missouri Botanical Gardens & Washington University
Contributor Dr. Susan Singer, Carleton College
Contributor Dr. Jonathan Losos, Washington University

How We Classify Organisms

Multiple Choice Quiz

Please answer all questions



1

A group of organisms at any particular level in a classification system is called a
A)species
B)genus
C)taxon
D)phylum
2

Scientific names higher than genus are
A)capitalized but not printed distinctively, italicized, or underlined
B)italicized or underlined
C)capitalized and italicized or underlined
D)italicized or underlined with the first word capitalized
3

As a practical definition of species, one can say that they are a group of organisms characterized by all of the following except they
A)do not normally interbreed with other species in nature
B)can be distinguished from other species
C)are incapable of hybridization with other species
D)remain relatively constant
4

The institution of the classification level of domain was prompted by
A)the overabundance of kingdoms
B)cladistics
C)great differences among bacteria
D)the taxonomic problem presented by viruses
5

Viruses are denied a kingdom of their own because
A)they are too poorly understood
B)they are too small
C)their genetics cannot be determined
D)they are not organisms
6

Viruses are assigned to the kingdom
A)Archaebacteria
B)Protista
C)Eubacteria
D)Fungi
E)none of the above
7

A major problem with polynomial names was that they were
A)inaccurate
B)cumbersome
C)not descriptive
D)in Latin
E)in Greek
8

The plant alternation of generations is characterized by _______________ meiosis.
A)zygotic
B)somatic
C)sporic
D)generic
E)gametic
9

When writing species epithets, it is sometimes permissible to abbreviate the _______________ name.
A)species
B)phylum
C)order
D)family
E)genus
10

True multicellularity occurs only in
A)animals
B)eukaryotes
C)plants and animals
D)plants, animals and protists
E)plants, animals and fungi
11

A related group of genera comprise
A)an order
B)a family
C)a class
D)a phylum
E)a division
12

Prokaryotic organisms make up the
A)Archaebacteria, Eubacteria, and Protists
B)Archaebacteria and Protists
C)Protists and Eubacteria
D)Protists
E)Eubacteria and Archaebacteria
13

In the current taxonomic system, families are grouped into
A)classes
B)phyla
C)orders
D)divisions
E)kingdoms
14

Of the six kingdoms now recognized,
A)two are plants and four are animals
B)four are eukaryotes and two are prokaryotes
C)four are macroscopic and two are microscopic
D)two are eukaryotes and four are prokaryotes
E)two are carnivorous and four are herbivorous
15

In plant taxonomy, a division is the equivalent to _______________ .
A)family
B)order
C)class
D)phylum
E)kingdom
16

Unicellular eukaryotes are grouped into
A)Fungi and protists
B)Fungi and Eubacteria
C)only protists
D)only Fungi
E)Fungi, protists, and Eubacteria
17

In printed scientific names, only the _______________ is capitalized.
A)family
B)class
C)species
D)kingdom
E)genus
18

In the early 1700's, the classification system used was
A)polynomial
B)pentanomial
C)binomial
D)tetranomial
E)trinomial
19

In printing scientific names, it is conventional for only the _______________ to be underlined or italicized.
A)binomial
B)genus
C)species
D)division
E)kingdom
20

Characteristics that have arisen as a result of common evolutionary descent are said to be
A)analogous
B)homogenous
C)heterogamous
D)homologous
E)contiguous
21

A kingdom that also comprises a domain is
A)Eubacteria
B)Protista
C)Fungi
D)Prokaryota
E)none of the above
22

The oldest level of taxonomic classification is
A)class
B)family
C)genus
D)phylum
E)species
23

Multicellular organisms and unicellular yeasts are contained in
A)Animalia
B)Plantae
C)Protista
D)Fungi
E)Eubacteria
24

Throughout the world, official species names are in
A)Latin
B)Greek
C)English
D)French
E)the native language
25

A taxon consisting of the most closely related species is called a(n) ________________.
A)family
B)order
C)genus
D)phylum
26

Modern biologists prefer to perceive the phylogenetic tree of organisms as multibranched, rather than linear, with no particular species being "higher", or superior, to another.
A)True
B)False
27

The binomial system of classification was developed by:
A)Darwin
B)Wallace
C)Linnaeus
D)Malthus
E)none of the above
28

Which one of the following sequences shows the correct hierarchy of classification, going from the most inclusive to the least inclusive?
A)Kingdom, Domain, Phylum, Order, Class, Family, Genus, Species
B)Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
C)Genus, Species, Kingdom, Phylum, Order, Class, Family
D)Species, Genus, Family, Class, Order, Phylum, Kingdom
E)Domain, Phylum, Kingdom, Genus, Species, Family, Order, Class
29

At the present time, scientists have named approximately ____ species.
A)100,000
B)500,000
C)1,000,000
D)1,500,000
E)10,000,000
30

Cladistic taxonomy places the birds as Archosaurs, along with the:
A)mammals
B)crocodilians
C)turtles
D)snakes
E)none of the above
31

Polynomial classification has recently begun to replace the binomial system.
A)True
B)False
32

The scientific name is derived from the genus and species to which an organism belongs.
A)True
B)False
33

Biologists currently recognize three kingdoms: Plants, Animals, and Protists.
A)True
B)False
34

A cladogram conveys information about ancestors and descendants of an organism.
A)True
B)False
35

The separation of the Archaebacteria into a separate domain indicates
A)that these organisms are very different from eubacteria and from eukaryotes
B)that organisms should never be classified according to how they appear (morphological characteristics)
C)that early taxonomists rushed to classify them without closely examining them
D)that optical viewing techniques have greatly improved so that we can better view these microorganisms
E)none of the above
36

You might find methanogens:
A)in swamps
B)in a cow's stomach
C)in marshes
D)all of the above
E)none of the above