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Item ME112005: The carbon dioxide used by plants comes from the air.

Which of the following statements is TRUE about the carbon dioxide that is used by plants?

  1. It is combined with oxygen to make sugar molecules.
  2. It is absorbed through the roots of plants.
  3. It comes from the air.
  4. It is food for plants.
Distribution of Responses
Chart showing distrubtion of responses for Item 112005
Students Responding Correctly
Group Correct Total Percent
Overall 875 2051 43%
Grades
  6–8 389 946 41%
  9–12 483 1098 44%
Gender
  Male44298145%
  Female424103041%
Primary Language
  English786178444%
  Other7221334%

View data table