Focus On Life Science: California Grade 7

Lesson 1: Natural Selection

Standards Check

1.
What did Darwin conclude from the different species living in the Galapagos Islands? 3.b
A)Different species in the same environment are similar.
B)Species evolve to survive in their environment.
C)Different species in the same environment are similar.
D)Species become extinct after awhile.
2.
What are the steps in Darwin's theory of natural selection? 3.b
A)overproduction, variation, inherited variation, natural selection
B)adaptation, natural selection
C)overproduction, adaptation, evolution
D)adaptation, evolution
3.
Darwin's controversial book on his ideas of evolution is called ________ 3.b
A)HMS Beagle
B)Evolution
C)The Origin of Species by Natural Selection
D)Galapagos Tortoises and Finches
4.
Changes that occur in genes to form new traits in the next generation is __________ 3.a
A)evolutionary variation
B)environmental variation
C)natural variation
D)genetic variation
5.
__________ is the change in the genetics of a species over time. 3.a
A)Heredity
B)Natural selection
C)Evolution
D)Mutation
6.
Which of the following is an example of how a new species can develop in nature? 3.b
A)A dog breeder makes a new breed of dog that looks different from all the others.
B)A group becomes separated and they evolve until they cannot interbreed with the original population.
C)A scientist in a laboratory develops a new species.
D)Two different species develop in such a way that they look the same.
7.
Why is selective breeding used with dairy cattle, race horses, and many other animals? 3.a
A)to continue desired traits
B)to produce mutations
C)to reduce sexual reproduction
D)to increase variations
8.
Change in inherited characteristics over time is called __________. 3.a
A)camouflage
B)species
C)fossils
D)evolution
9.
A variation that helps an organism be better suited for its environment is a(n) __________. 3.a
A)species
B)hypothesis
C)element
D)adaptation
10.
What may a series of helpful variations in a species result in? 3.a
A)embryology
B)fossils
C)adaptation
D)climatic change
Grade 7
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.