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Seventh Grade (Grade 7) Evolution Questions

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Grade 7 Evolution
According to Darwin's theory of evolution, how do new species evolve?
  1. artificial selection
  2. random chance
  3. natural selection
  4. unnatural selection
Grade 7 Evolution
Species change over time through
  1. evolution.
  2. adaptation.
  3. extinction.
  4. genetic variation.
Grade 7 Evolution
Grade 7 Evolution
Grade 7 Evolution
Grade 7 Evolution
Over a period of years, the average rainfall in an area decreases, causing environmental changes. Most likely to survive these environmental changes is a population
  1. with a great amount of genetic variation.
  2. with very little genetic variation.
  3. that has been altered through artificial selection.
  4. with the smallest population size.
Grade 7 Evolution
Which scenario is an example of natural selection? (Select all that apply.)
  1. Farmers crossbreed two types of cows to produce a breed of cow that has high quality beef and can tolerate a hot climate.
  2. Giraffes that have longer necks survive a dry season by eating leaves from the tops of trees. Those giraffes breed more successfully that year.
  3. Dogs that have a desirable coat color are bred with one another to produce puppies with the same coat color.
  4. People kill rattlesnakes that rattle when approached by humans, but people do not kill rattlesnakes that remain silent. The quiet snakes survive and breed.
Grade 7 Evolution
The scientist credited with proposing the theory of evolution by natural selection is
  1. Gregor Mendel.
  2. Jean-Baptiste Lamarck.
  3. Charles Darwin.
  4. Francis Crick.
Grade 7 Evolution
A bat's wing and a lion's leg bones are examples of
  1. variation.
  2. homologous structures.
  3. migratory effects.
  4. fossils.
Grade 7 Evolution
A change that increases an organism's chances for survival is a(n)
  1. adaptation.
  2. mutation.
  3. radiation.
  4. homologous structure.
Grade 7 Evolution
What is most likely to happen to a species that is not suited to its environment?
  1. It will survive and produce many offspring.
  2. It will get bored and leave.
  3. It will not survive to reproduce.
  4. It will change all its previous behaviors.
Grade 7 Evolution
What is a genetic adaptation?
  1. an adjustment to an environment
  2. an altering of a behavior
  3. a mutation that helps an organism survive
  4. a variation from the norm
Grade 7 Evolution
Body parts that perform a similar function but differ in structure are
  1. comparative anatomy.
  2. homologous structures.
  3. vestigial structures.
  4. analogous structures.
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