Quiz 2
1) Nonbranching evolution ______.
A) results in speciation
B) often results in mass extinctions
C) increases biological diversity
D) is also called linear evolution
E) occurs only in plants
____________________
2) Biological species consist of groups of ______.
A) populations
B) individuals
C) families
D) phyla
E) genera
A reproductive barrier that prevents species from mating is an example of ______.
3)
A)
B)
C)
D)
E)
a pre-zygotic barrier
hybrid inviability
zygote mortality
a post-zygotic barrier
hybrid sterility
4) What type of reproductive isolating mechanism is described by a situation in which female fireflies only
mate with males who emit light in a particular pattern?
A) habitat isolation
B) hybrid sterility
C) temporal isolation
D) mechanical isolation
E) behavioral isolation
5) The type of reproductive barrier that occurs when two species mate but fail to produce fertile hybrids is
referred to as ______.
A) mechanical isolation
B) temporal isolation
C) habitat isolation
D) a post-zygotic barrier
E) behavioral isolation
6) What name is given to the single supercontinent that formed near the end of the Paleozoic?
A) Gondwanaland
B) Laurasia
C) Omniland
D) Pangaea
E) Gondwana
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7) Cladistic analysis identifies clades on the basis of ______.
A) the ability to interbreed and produce fertile offspring
B) analogous structures unique to each group
C) homologous structures unique to each group
D) last appearance in the fossil record
E) first appearance in the fossil record
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8) Eukaryotes arose about ______ years after the first prokaryotes.
A) 3.0 million
B) 1.0 billion
C) 2.0 billion
D) 3.0 billion
E) 4.0 billion
A)
B)
C)
D)
E)
9) Whose seminal experiments demonstrated that, given the conditions on the primitive Earth, life
could arise spontaneously?
Miller and Urey
Darwin
Watson
Pauling
Margulis
A)
B)
C)
D)
E)
10) What was the first stage of the process that led to the abiotic origin of life?
abiotic synthesis of monomers, such as amino acids and nucleotides
origin of self-replicating molecules
abiotic synthesis of ribozymes
abiotic synthesis of polymers
abiotic formation of pre-cell
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