For this experiment, you will be able to manipulate only one variable. First, the amount of water; this means the water in the experimental group is more or less than the control, hopefully not killing the experimental group, but just altering the growth rate of the experimental group compared to the control group. Second the amount of nutrients; nutrients can be varied if you have some plant food or fertilizer at home to use. Third, simulated herbivory is an interesting variable to use. If used herbivory as your experimental variable, decide on a pattern and amount of herbivory to inflict on the plants of the experimental group and write down the procedure in detail. Experiment to test how one of the following variables impacts the growth of Brassica rapa: Water, Nutrient Availability, and Herbivory. 1) Write down just one name of the variable. This is the independent variable. 2) Write down a question to address by manipulating the variable. 3) Next, formulate a hypothesis that a group will test to investigate. Given the variable that you chose to manipulate (independent variable), what do you think will happen? This statement of what you expect is the hypothesis. Formulate your hypothesis based on your understanding of the plant's biology. Write the hypothesis. Generally speaking, the growth rate will be where you take measurements and where you will expect to see a difference in the experimental group compared to the control group. Growth rate, in one form or another, will be the dependent variable in this experiment.
For this experiment, you will be able to manipulate only one variable. First, the amount of water; this means the water in the experimental group is more or less than the control, hopefully not killing the experimental group, but just altering the growth rate of the experimental group compared to the control group. Second the amount of nutrients; nutrients can be varied if you have some plant food or fertilizer at home to use. Third, simulated herbivory is an interesting variable to use. If used herbivory as your experimental variable, decide on a pattern and amount of herbivory to inflict on the plants of the experimental group and write down the procedure in detail.
Experiment to test how one of the following variables impacts the growth of Brassica rapa: Water, Nutrient Availability, and Herbivory.
1) Write down just one name of the variable. This is the independent variable.
2) Write down a question to address by manipulating the variable.
3) Next, formulate a hypothesis that a group will test to investigate. Given the variable that you chose to manipulate (independent variable), what do you think will happen? This statement of what you expect is the hypothesis. Formulate your hypothesis based on your understanding of the plant's biology. Write the hypothesis. Generally speaking, the growth rate will be where you take measurements and where you will expect to see a difference in the experimental group compared to the control group. Growth rate, in one form or another, will be the dependent variable in this experiment.
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