Living Environment Regents Review Practice Laboratory Skills Question 10
Sunday, 28 June 2009 12:40
A student formulated a hypothesis that cotton will grow larger bolls (pods) if magnesium is added to the soil. The student has two experimental fields of cotton, one with magnesium and one without. Which data should be collected to support this hypothesis?
A)Height of the cotton plants in both fields
B)Length of the growing season in both fields
C)Color of the cotton bolls in both fields
D)Diameter of the cotton bolls in both fields
Correct Answer: Option D - Diameter of the cotton bolls in both fields
The data directly providing information to test the hypothesis is the diameter of the cotton bolls. Hence, it is the information to be collected to support the hypothesis.
Height of the cotton plants, length of the growing season and color of the cotton bolls are irrelevant to the hypothesis. Hence, options A, B and C are incorrect.
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