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Item EN023001: When a new predator is introduced into a population of lizards, the lizards with the traits that help them avoid the predator are more likely to survive and reproduce than the others.

According to the theory of natural selection, what would happen to a species of lizards when a new predator is introduced into the environment where the lizards live?

  1. The lizards that already have the physical traits needed to avoid the new predator would be more likely to survive and reproduce, and the ones that do not would be less likely to survive and reproduce.
  2. All of the lizards would try to develop new physical traits to avoid the new predator.
  3. Some of the lizards would try to develop new physical traits to avoid the new predator, and the other lizards would die.
  4. Because all lizards of the same species have the same physical traits, one lizard would not have an advantage over another lizard. They would either all survive or all die.
Distribution of Responses
Chart showing distrubtion of responses for Item EN023001
Points Earned
Group Correct Total Percent
Overall 231 572 40%
Grades
  6–8 6 18 33%
  9–12 204 502 41%
Gender
  Male9324538%
  Female12028342%
Primary Language
  English20851141%
  Other81844%

View data table

Distribution of Responses
Chart showing distrubtion of responses for Item EN023001
Points Earned
Group Correct Total Percent
Overall 157 274 57%
Grades
  6–8 10 14 71%
  9–12 128 230 56%
Gender
  Male6711956%
  Female7413057%
Primary Language
  English13323756%
  Other6967%

View data table

Distribution of Responses
Chart showing distrubtion of responses for Item EN023001
Points Earned
Group Correct Total Percent
Overall 164 278 59%
Grades
  6–8 4 4 100%
  9–12 143 248 58%
Gender
  Male7613058%
  Female7713159%
Primary Language
  English14825159%
  Other2540%

View data table