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Biology Unit 3 - Evolution
Test Description: Biology Unit 3 - Evolution
Instructions: Answer all questions to get your test result.
1) The more closely related two different organisms are, the
A
more recently they shared a common ancestor
B
more similar their habitats are
C
less similar their DNA sequences are
D
less likely they are to have the same genes in common
2) According to natural selection theory,
A
Adaptations beneficial in one habitat should generally be beneficial in all other habitats
B
Adaptations beneficial at one time should generally be beneficial during all other times
C
Different species occupying the same habitat will adapt to that habitat by undergoing the same genetic changes
D
Well-adapted individuals leave more offspring, and thus contribute more to the next generation's gene pool
3) The correct sequence from the most to the least comprehensive, of the taxonomic levels listed here is
A
Kingdom, phylum, class, order, family, genus, and species
B
Phylum, kingdom, order, class, species, family, and genus
C
Kingdom, phylum, order, class, family, genus, and species
D
Family, phylum, class, kingdom, order, species, and genus
4) Any variation that can help an organism survive in its environment is called a(n):
A
characteristic
B
vestigial structure
C
adaptation
D
competition
5) The dog breeds we have today were developed through:
A
natural selection
B
artificial selection (selective breeding)
C
acquired selection
D
sexual selection
6) 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
gathering food
B
building nests
C
attracting a mate
D
defending territory
7) A _______, or change in the sequence of DNA creates more _______ in a species
A
adaptation; survival
B
mutation; individuals
C
vestigial trait; uniformity
D
mutation; diversity
8) 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 are made of the same proteins
C
they have the same DNA
D
they are all mammals
9) When ants feed too heavily on acacia plants, the plants produce a toxin. Natural selection would favor ants that —
A
remain on the same plant for their entire life cycle
B
feed on a variety of different plants
C
eat many different leaves on the same plant.
D
eat only acacia plants.
10) 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
they both are mammals
D
their ancestors adapted to live in similar enironments
*select an answer for all questions
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