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A group of organisms at any particular level in a classification system is called aA) species B) genus C) taxon D) phylum 2
Scientific names higher than genus areA) 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 theyA) 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 byA) 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 becauseA) 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 kingdomA) Archaebacteria B) Protista C) Eubacteria D) Fungi E) none of the above 7
A major problem with polynomial names was that they wereA) 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 inA) animals B) eukaryotes C) plants and animals D) plants, animals and protists E) plants, animals and fungi 11
A related group of genera compriseA) an order B) a family C) a class D) a phylum E) a division 12
Prokaryotic organisms make up theA) 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 intoA) 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 intoA) 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 wasA) 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 beA) analogous B) homogenous C) heterogamous D) homologous E) contiguous 21
A kingdom that also comprises a domain isA) Eubacteria B) Protista C) Fungi D) Prokaryota E) none of the above 22
The oldest level of taxonomic classification isA) class B) family C) genus D) phylum E) species 23
Multicellular organisms and unicellular yeasts are contained inA) Animalia B) Plantae C) Protista D) Fungi E) Eubacteria 24
Throughout the world, official species names are inA) 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 indicatesA) 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