The species of finches that Darwin
found on the Galapagos Islands
displayed different structural
adaptations. One of the adaptations
that Darwin noted was the …
bird’s different shaped beaks
100
When lions prey on a herd of
antelopes, some antelopes are
killed and some escape. Which part
of Darwin’s concept of natural
selection might be used to
describe this situation?
Survival of the fittest
100
In 1859 Charles Darwin
published his revolutionary
scientific ideas in a work titled
____________
On the Origin of Species
100
An adaptation is an inherited
characteristic that can be
A. physical or behavioral
B. physical or geographical
C. acquired during the organisms lifetime
D. the result of artificial selection
A. physical or behavioral
200
In _____________ human breeders,
rather than the environment,
select the variations of traits
to be passed to offspring.
artificial selection
200
Charles Darwin relized that the
measure of success for an organism
was not only a long period of
survival but also ___________.
reproduction
200
The term __________ refers to
an organism’s ability to survive
and reproduce in a specific
environment.
fitness
200
According to the concept of
___________, living and extinct
species evolved from the same
ancestors.
common descent
300
According to Darwin’s theory
of evolution, all species on
Earth are united by ____________
common ancestors
300
According to Darwin’s theory of
evolution, __________?change over time.
species
300
Darwin concluded that, in similar
environments around the world,
______________ could produce
similar structures in unrelated species
natural selection
300
Certain animal structures that have
different functions in different
species and develop from the same
embryonic tissues are called
______________ structures.
homologous
400
What way did the voyage of the
Beagle provide Darwin with
an ideal opportunity for
collecting and analyzing data?
He was able to collect species from many different places where the ship anchored. While at sea he was able to record and think about his observations.
400
What evidence did Darwin collect
in addition to specimens of
organisms alive during his time?
He collected many fossils
400
Were Darwin’s hypotheses about
natural selection and evolution
similar to the ideas of most other
scientists? Explain
NO, His hypothesis challenged the fundamental scientific ideas of the time
400
What was a general observation
that Darwin made about the
organisms and their environments?
That organisms were extremely well suited for their environment.
500
How did the finches and the
tortoises that Darwin observed
on the Galapagos Islands
influence his thinking?
He began to think that the finches and tortoises had evolved from a single finch and a single tortoise species from the mainland. Led to the idea of natural selection
500
What was Darwin’s greatest
contribution to science?
The development of his hypothesis on the Theory of Evolution
500
What sources of evidence did
Darwin consider when he presented
his concept of evolution by
natural selection?
Fossil record, geographic distribution, homologous body structures, and similarities in embryological development
500
What might happen if a well-
adapted population experienced
sudden major changes in
its environment?
If the population had a variety of traits, some of the members might be able to survive and reproduce.
If not, the population would become extinct