AP PSYCHOLOGY

SENSATION AND PERCEPTION

VISION SENSORY AND PERCEPTUAL PROCESSING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the dependent variable?
A
Type of plant
B
Water, apple juice, milk
C
Plant growth
D
None of the above
Explanation: 

Detailed explanation-1: -In this investigation, the independent variable is represented by the different liquids (Option C). The independent variable is the variable that isn’t changed by the other variables during the experimental procedure.

Detailed explanation-2: -When you try to grow plants using another liquid, the molecules (or what makes up that liquid) are shaped differently from water molecules. Because of their different shape, they block the process of photosynthesis from occurring, so the seeds do not know they should grow!

Detailed explanation-3: -Think about variables for a question such as, “Does a bean plant grow best in sun or shade?” First, identify the variable that will be changed. In this case, the amount of light that the plant receives is changed. This is the independent variable.

Detailed explanation-4: -In a study measuring the influence of different quantities of fertilizer on plant growth, the independent variable would be the amount of fertilizer used. The dependent variable would be the growth in height or mass of the plant.

Detailed explanation-5: -In this experiment, the addition of fertilizer is the independent variable manipulated by the scientist. Plant height is the dependent variable that responds to the change in the independent variable. Each plant is exposed to an equal amount of sunlight, so sunlight is the control variable.

There is 1 question to complete.