Sympatric speciation is

The formation of a new species within a population

What is adaptive radiation?

many variations in a population

Which statement about evolution in the Galapagos finches is true?

Natural selection on beak size and shape is driven by food

What are vestigial structures?

structures that no longer serve any purpose but did in ancestor

Which trait may increase an organism's fitness?

the ability to camouflage into their environment

a characteristic that can be physical or behavioral

Allopatric speciation is:

when a population is separated by a physical boundary

Lamarck's theory of evolution includes the concept that new organs appear due to

the actions of organisms as they use or not use body parts

Evolution is the process of

change in species over long periods of time

Which BEST describes natural selection?

struggle for existence by all living things

Which of the following is NOT part of Darwin's proposals?

the variations are caused by mutations

as one organism evolves, another evolves with it

Homologous structures =

Same structures that have evolved different functions

According to Darwin's theory of natural selection, individuals that tend to survive

have variations best suited to their environment

What is mass extinction?

catastrophic event that causes the loss of many species

On the Galapagos Islands, Darwin observed

similar species all with traits suited to their environment

Which of the following about genetic drift is FALSE?

individual from one population breed with another population

Darwin's observation that finches of different species have similar characteristics supports

the theory that they all descended from a common ancestor

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Unit 5A: Evolution

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Questions 46

Answers

1
Which one would NOT lead to the evolution of a new species?
genetic mutations
geographical changes
natural disaster which leads to environment changes
increased predation
2
When lions prey on antelopes, some are killed and some survive. Darwin explained this by
reproductive isolation
acquired characterisitcs
descent with modification
survival of the fittest
3
Sympatric speciation is
2 species living within the same area
New species formed due to geographic isolation
The formation of a new species within a population
A new species due to extinction
4
What is adaptive radiation?
an animal radiates to survive
species expland outward geographically
one species givves rise to many species
many variations in a population
5
The creation of a new habitat by a small group of individuals is called
stabilizing selection
directional selection
Hardy-Weinberg principal
the founder effect
6
Examples of fossils include preserved
body parts
all of these
foorprints
eggs
7
Which statement about evolution in the Galapagos finches is true?
None of the finch species is reproductively isolated
Natural selection on beak size and shape is driven by food
Stabilizing selection has favored an intermediate beak type
Mate choices likely plays no role in their evolution
8
The front legs of a cat and the wings of a bat are examples of
comparative biochemistry
analogous structures
homologous structure
comparative embryology
9
Genetic drift tends to occur in populations that
are formed from a new species
are very large
are small
have unchanging allele frequencies
10
In humans the pelvis and femur is involved in walking, in whales these bones are considered
acquired traits
fossils
natural variations
vestigial structures
11
All of the following are examples of fossils EXCEPT
<p>bones</p>
footprints
eyeballs
eggs
12
A single species that has evolved into several different forms that live in different ways has
undergone adaptative radiation
undergone punctuated equilibrium
has coevolved
been a victi of mass extinction
13
What are vestigial structures?
structures that no longer serve any purpose but did in ancestor
Structures with a similar structure but different function
structures that look the same
structures with the same function but different structure
14
Which trait may increase an organism's fitness?
a bird with a wide beak that eats tree insects
having a mating call to attract predators
having fur that absorbs water in wet environments
the ability to camouflage into their environment
15
Which isolation occurs when animals cannot reproduce because of the distance between them?
geographical isolation
behavioral isolation
reproductive structures are not compatible
16
An adaptation is
the result of artificial selection
a characterisitc that can be geographical or physical
a characteristic that can be physical or behavioral
acquired during an organsim's lifetime
17
Darwin called the ability of an organisms to survive and reproduce in its environment
diversity
fitness
adaptation
evolution
18
Allopatric speciation is:
when a population is separated by a physical boundary
none of these
when a population is separated due to genetic divergence
when a population is separated due to gametic isolation
19
Lamarck's theory of evolution includes the concept that new organs appear due to
an unchaging local environment
continual increase in population size
natural variations are already present in the population
the actions of organisms as they use or not use body parts
20
Darwin's theory of evolution suggests that
species change over time
different species can interbreed
animals that look alike are most closely related
extinct species are not related to living species
21
Darwin's theory of evolution explains all of the following EXCEPT
how species change over time
how species became extinct
how evolution takes place in the natural world
how inherited traits are passed from parent to child
22
Evolution is the process of
change in species over long periods of time
development of once-celled organisms from mammals
changing energy flow in food webs
embryonic development of modern humans
23
The situation in which allele frequencies of a population remain constant
natural selection
genetic drift
evolution
genetic equilibrium
24
The separation of populations by barriers such as rivers, mountains, or bodies of water is
behavioral
reproductive
geographic
temporal
25
Which BEST describes natural selection?
unrelated but similar species live in different areas
changes in the inherite characterisitcs of a population
struggle for existence by all living things
natural variation is found in all populations
26
The process in which 2 species evolve in response to changes in each other over time is
adaptive radiation
coevolution
convergent evolution
punctuated equilibrium
27
Which of the following is NOT part of Darwin's proposals?
there is overpopulation in nature
there is natural selection
there is a variation in the individuals of the population
the variations are caused by mutations
28
The ability of an individual to survive and reproduce in its environment.
species intelligence
fitness
species size
species skin color
29
Coevolution is
2 or more related species become less similar
a change over time
as one organism evolves, another evolves with it
Organisms living in similar conditions evolve similarities
30
Homologous structures =
Same structures that have evolved different functions
Same structures that have always had the same functions
Structures that have nothing in common
Different structures that have evolved the same functions
31
According to Darwin's theory of natural selection, individuals that tend to survive
have variations best suited to their environment
have characterisitcs that breeders value
got characterisitcs from their parent through use and disuse
have the least humber of offspring
32
What was the name of the ship Darwin sailed on?
MHS Labrador
HMS Labrador
MHS Animal
HMS Beagle
33
In genetic drift, allele frequencies change because of
mutations
genetic equilibrium
natural selection
chance
34
Most fossils form in
volcanic rock
sap of ancient trees
sedimentary rock
rusty water
35
What connects all of the different species in the "tree of Life"?
common ancestor
physical appearance
color
common diet
36
What is mass extinction?
all species die.
all masses on Sunday are cancelled
permanent loss of species
catastrophic event that causes the loss of many species
37
The origin of a new species is known as
selection
speciation
fitness
survival
38
What differences are apparent in the heads of the bird species shown in the picture?
color
beak size
eye shape
wing length
39
In birds, if one group has short beaks and another has long beaks (no medium beaks) what process has occurred?
directional
disruptive
stabilizing
temporal
40
On the Galapagos Islands, Darwin observed
species exactly like those found in South America
completely unrelated species on each island
similar species all with traits suited to their environment
species completely unrelated to those found in South America
41
Whose theory of evolution was eventually proved to be incorrect?
Wallace
Lamarck
Darwin
Mendel
42
Which of the following about genetic drift is FALSE?
happens by chance
gene pool changes
individual from one population breed with another population
smaller populations will show a large impact
43
Darwin's observation that finches of different species have similar characteristics supports
the theory that they all descended from a common ancestor
the idea that they can interbreed
the idea that they all eat the same type of food
the theory that traits are acqired through use and disuse
44
What is a factor that does NOT affect mating/reproduction?
age
timing
behavior
location
45
Natural Selection Refers To:
Survival of the weakest
Survival of the fittest
Survival of the species
Survival of non-native species
46
The fossil record shows that
all of these
fossils occur in a particular order
modern organisms have unicellular ancestors
most organisms that ever lived on Earth are now extinct

Unit 5A: Evolution Flashcards | StudBud