Biology Unit 3 - Evolution Question Preview (ID: 33697)
Biology Unit 3 - Evolution.
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A _______, or change in the sequence of DNA creates more _______ in a species
a) adaptation; survival
b) mutation; diversity
c) vestigial trait; uniformity
d) mutation; individuals
The dog breeds we have today were developed through:
a) natural selection
b) artificial selection (selective breeding)
c) sexual selection
d) acquired selection
The finches on the Galapagos island were similar in form except for variations of their beaks. Darwin observed that these variations were useful for:
a) attracting a mate
b) defending territory
c) building nests
d) gathering food
The correct sequence from the most to the least comprehensive, of the taxonomic levels listed here is
a) Family, phylum, class, kingdom, order, species, and genus
b) Kingdom, phylum, class, order, family, genus, and species
c) Kingdom, phylum, order, class, family, genus, and species
d) Phylum, kingdom, order, class, species, family, and genus
Any variation that can help an organism survive in its environment is called a(n):
a) adaptation
b) characteristic
c) competition
d) vestigial structure
According to natural selection theory,
a) Adaptations beneficial in one habitat should generally be beneficial in all other habitats
b) Different species occupying the same habitat will adapt to that habitat by undergoing the same genetic changes
c) Adaptations beneficial at one time should generally be beneficial during all other times
d) Well-adapted individuals leave more offspring, and thus contribute more to the next generation's gene pool
The more closely related two different organisms are, the
a) more similar their habitats are
b) less similar their DNA sequences are
c) more recently they shared a common ancestor
d) less likely they are to have the same genes in common
The study of embryology and seeing how embryos are similar in the first stages is proof that _____
a) they have a common ancestor
b) they have the same DNA
c) they are made of the same proteins
d) they are all mammals
When ants feed too heavily on acacia plants, the plants produce a toxin. Natural selection would favor ants that —
a) eat only acacia plants.
b) feed on a variety of different plants
c) eat many different leaves on the same plant.
d) remain on the same plant for their entire life cycle
Why would two unrelated species have similar structures and characteristics?
a) they have a common ancestor
b) they both underwent the same series of random mutations
c) their ancestors adapted to live in similar enironments
d) they both are mammals
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