Evolution: Question Preview (ID: 31518)

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A species is a group of similar organisms that
a) can mate with one another and produce fertile offspring.
b) can live together on an island.
c) can migrate to an island from the mainland.
d) all have exactly the same traits.

A branching tree is
a) a diagram showing how scientists think different groups of organisms are related.
b) a species of tree that is not closely related to the other tree species.
c) a drawing that shows where different animals live in a tree.
d) a homologous structure that many plants have.

Which term refers to a species creating more offspring than can possibly survive?
a) natural selection
b) overproduction
c) evolution
d) variation.

How does natural selection lead to evolution?
a) Stronger offspring kill weaker members of the species.
b) Helpful traits accumulate among surviving members of the species.
c) Overproduction provides food for stronger members of the species
d) Environmental changes kill weaker members of the species.

What did Darwin infer from his observations of organisms in South America and the Galapagos Islands?
a) The organisms on the Galapagos Islands were identical to the mainland organisms.
b) A small number of different plant and animal species had come to the mainland from the Galapagos Islands.
c) The organisms on the Galapagos Islands were completely unrelated to mainland organisms.
d) A small number of different plant and animal species had come to the Galapagos Islands.

A trait that helps an organism survive and reproduce is called a(n):
a) mutation.
b) selection.
c) adaptation.
d) variation.

Which term refers to the process by which individuals that are better adapted to their environment are more likely to survive and reproduce?
a) natural selection.
b) overproduction.
c) competition.
d) variation.

If two organisms look very similar during their early stages, this is evidence that the orgasnisms
a) are not related.
b) evolved from different ancestors.
c) have exactly the same DNA.
d) evolved from a common ancestor.

Which term refers to similar structures that related species have inherited from a common ancestor?
a) DNA sequences
b) developmental organisms
c) homologous structures
d) punctuated equilibria

Which term refers to a species that no longer has any living members?
a) molded
b) fossilized
c) extinct
d) petrified

Scientists combine evidence from fossils, body structures, early development, and DNA and protein structures to
a) determine what bones an animal has in its forelimbs
b) determine which fossils are older than others
c) determine which fossils are older than others
d) determine whether an organism will have gills during its early development.

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