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Plant Structures, Transport, and Responses
Worksheet
Grade Level
Biology
10.35 Plant Structures, Transport, and Responses
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A class wants to test whether light direction affects shoot growth. Which design best isolates light direction as the independent variable?
A
Use different species, different soil moisture, and different light directions for each pot.
B
Use identical seedlings with equal water and temperature, changing only the side from which light shines.
C
Place one seedling in light and one in darkness while also changing fertilizer and temperature.
D
Measure only root length after pollination without recording light direction.
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