1. What types of stimuli do plants naturally respond to? a) light b) gravity c) wind 2. In the experiment described, what is the independent (manipulated) variable? a) wind 3. What is the dependent (responding) variable? a) wind b) tubes c) growth d) light and gravity b) tubes c) growth/ 4. What evidence did the experiment provide that plants can learn? a) plants grew toward the light each time b) plants grew toward the fan even when no light was present c) plants grew toward the wind in some case, and toward the light in other cases 5. The story does not mention a control group. Describe a set-up that could serve as the control group. a) a plant that grown with wind on one side of light on the other b) a plant that is grown in conditions with no light c) a plant that is grown in space, with no gravity 6. Scientists concluded that plants learn to wind with light. a) respond b) associate c) stimulus www. blologycorner. com​