Item CV002003: An experiment in which the amount of sunlight is varied and the minerals in the plant's water is held constant could tell you the effect of light on plant growth.

A student wants to find out if a particular kind of plant grows better in the sun or in the shade. She has two identical plants. She places one plant in sand and sets the plant in the sunlight. She adds minerals and water to the sand.

Sunlight
Water and minerals

Which of the following conditions should she use for the second plant to determine the effect of light?

  1. Sunlight
    Water and minerals
  2. Sunlight
    Water
  3. Shade
    Water and minerals
  4. Shade
    Water

 

Distribution of Responses

Chart showing distrubtion of responses for Item CV002003

Percent of students responding correctly

Overall70%
Grades 6–863%
Grades 9–1278%
Male67%
Female73%
Primary Language is English72%
Primary Language is not English56%

View data table

TIMSS population 2 item pool (N-1), 1994