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Seventh Grade (Grade 7) Evolution Questions

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Grade 7 Evolution
Young embryos of different vertebrates
  1. have acquired traits.
  2. have no similarities.
  3. have similarities.
  4. are called homologous embryos.
Grade 7 Evolution
The longer a group remains isolated from the rest of the species
  1. has no bearing on whether it will evolve into a new species.
  2. the less likely it is to evolve into a new species.
  3. the more likely it is to evolve into a new species.
  4. both a and c
Grade 7 Evolution
Species change over time through                  .
  1. evolution
  2. Adaptation
  3. extinction
  4. Genetic Variation
Grade 7 Evolution
Over a period of years, the average rainfall in an area decreases, causing environmental changes. Which of the following populations would be most likely to survive these environmental changes?
  1. a population with the greatest amount of genetic variation
  2. a population with the least amount of genetic variation
  3. a population that has been altered through artificial selection
  4. a population with the smallest population size
Grade 7 Evolution
Grade 7 Evolution
Grade 7 Evolution
Body parts that have lost their original function through evolution are called                      .
  1. Comparative Anatomy
  2. Homologous Structures
  3. Vestigial Structures
  4. Analogous Structures
Grade 7 Evolution
Individuals within a population have slightly different traits, called variations. How do variations improve the likelihood that a population will survive?
  1. Variation enables individuals to produce offspring that will survive into adulthood.
  2. Variation enables the population to create new genes, which help individuals survive a significant change in their environment.
  3. Variation provides the raw material upon which natural selection acts in a population.
  4. Variation enables individuals who are very different from the rest of the population to reproduce more successfully.
Grade 7 Evolution
Body parts that perform a similar function but differ in structure are called
  1. Comparative Anatomy
  2. Homologous Structures
  3. Vestigial Structures
  4. Analogous Structures
Grade 7 Evolution
A scientist is studying the DNA of three species. Species A and species B have DNA that is 97% similar. Species C and species A have DNA that is 95% similar. What can the scientist conclude?
  1. Species B is equally related to both species A and species C.
  2. Species B has a closer evolutionary relationship with species C than it does with species A.
  3. Species A has a closer evolutionary relationship with species B than it does with species C.
  4. Species A has a closer evolutionary relationship with species C than it does with species B.
Grade 7 Evolution
Grade 7 Evolution
Grade 7 Evolution
Which of the following is a situation that could lead to extinction of a species?
  1. increased competition
  2. increased food supply
  3. increased habitat
  4. increased population size
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