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Evolution
Evolution
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#natural selection
Flashcards
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1
The large ground finch obtains food by cracking seeds. Its short, strong beak is an example of
the tendency towards perfection.
a vestigial organ.
the struggle for existence.
an adaptation.
2
Darwin's theory of evolution is supported by
[all of the other options]
embryology.
fossil evidence.
DNA evidence.
3
Scientists think that chimps are more closely related to humans than other primates. Why?
Humans and chimps have binocular vision.
Both human and chimp embryos contain gill slits.
Humans and chimps are both placental mammals.
Humans and chimps share 98% of their DNA sequences.
4
Body parts that are used for the same function but are NOT the same structure are called
analogous structures.
vestigial structures.
homologous structures.
embryonic similarities.
5
A bird's wings are homologous to
a dog's front legs.
a fish's tailfin.
an alligator's claws.
a mosquito's wings.
6
What would be a favorable trait for a rabbit trying to avoid predators in a snowy environment?
brown fur
short ears
long ears
white fur
7
Which of the following does NOT provide evidence for evolution?
natural variation within a species
fossil record
geographical distribution of living organisms
homologous structures of living organisms
8
How well an organism survives and reproduces in its environment can be described as its
common descent.
homologous structure.
analogous structure.
fitness.
9
An inherited characteristic that increases an organism's ability to survive & reproduce is
an adaptation.
an analogous structure.
a vestigial structure.
a homologous structure.
10
Which is NOT part of Darwin's theory of evolution?
common descent
variations and adaptations
natural selection
acquired traits
11
Body parts that have little/no purpose are called
embryonic similarities.
analogous structures.
homologous structures.
vestigial structures.
12
In addition to living species, Darwin studied the preserved remains of ancient organisms called
adaptations.
homologous structures.
vestigial structures.
fossils.
13
Both pig and rabbit embryos have gill slits. This suggests that
pigs and rabbits share a common ancestor.
pigs and rabbits can live in water.
pigs and rabbits are closely related to fish.
pigs are more closely related to fish than rabbits.
14
Peppered moths vary in color from light gray to black. In an area without factories, we expect
mostly dark moths.
mostly light moths.
equal numbers of light and dark moths.
no moths.
15
Structures shared by organisms that come from a common ancestor are called
homologous structures.
embryonic similarities.
vestigial structures.
analogous structures.
16
In Darwin's time, many people thought Earth was formed just a few thousand years ago.
true
false
17
The wings of bats and forelimbs of cats are vestigial structures.
false
true
18
Species that have evolved from a common ancestor should have certain characteristics in common.
true
false
19
In a muddy pool, light-colored fish are more likely to be eaten than dark fish. Dark color is
artificial selection.
fossil evidence.
an adaptation.
[none of the other options]
20
In natural selection, humans select the variations of traits to be passed down to offspring.
true
false
21
Evidence for evolution only occurs in the fossil record.
false
true
22
Darwin noted that different species were found in similar environments on different continents.
true
false
23
Both bats and mosquitoes have wings. Wings are an example of
[all of the other options]
vestigial structures.
analogous structures.
homologous structures.
24
Which of these would an animal breeder use to increase the number of cows giving the most milk?
acquired traits
natural selection
overproduction
artificial selection