Item EN055001: Most species living today did not exist at the time life began.

Which of the following is TRUE about the species that are living on earth today?

  1. All species living today have existed since the time life began.
  2. Most species living today have existed since the time life began, but a few have appeared more recently.
  3. Most species living today did not exist at the time life began.
  4. There is no way of finding out whether all, most, or only a few species living today existed since the time life began.

Distribution of Responses

Chart showing distrubtion of responses for Item EN055001

Percent of students responding correctly

Overall48%
Grades 6–846%
Grades 9–1252%
Male50%
Female46%
Primary Language is English49%
Primary Language is not English42%

View data table