easy · Enhanced ACT science
A student investigated how the amount of liquid fertilizer affects the growth of bean plants. She prepared four pots that were identical in soil, sunlight, and watering schedule. Each week she added a different amount of fertilizer to a pot: 0 mL, 5 mL, 10 mL, or 15 mL. After three weeks she measured the height of the stem in each pot.
Which pot is best described as the control group?
- The pot that received 10 mL of fertilizer each week
- The pot that received 0 mL of fertilizer each week
- The pot that received 5 mL of fertilizer each week
- The pot that received 15 mL of fertilizer each week
Sign up free to see the explanation and track your rank →
More Enhanced ACT science practice
- An experimenter tests the effect of different light waveleng… — In this experimental desig
- At any given temperature, the catalyst increases the reaction rate by what factor?
- What is the relationship?
- Which species has a higher population at Year 5?
- Which soil type retains the LEAST amount of water?
- What is the pressure when the volume is 2.0 L?
- If water has a density of 1.00 g/cm³, which liquid will sink in water?
- As the frequency of the waves increases, the wavelength: