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4.6 Designing an investigation to determine the water potential of potato tissue
Watch the video and then answer the following questions.
1. Which of the following is/are the control variable(s) in this investigation?
(1) initial size and shape of the potato strips
(2) immersion time of the potato strips in the sucrose solutions
(3) concentrations of the sucrose solutions
A. (2) only
B. (1) and (2) only
C. (1) and (3) only
D. (2) and (3) only
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