You Perform an Experiment in Which You Take 16 Pots

question 57

Multiple Choice

You perform an experiment in which you take 16 pots of strawberry plants and give half of them 1 gram of ammonium nitrate per liter of water and the other half just get water. Each group is then split in half again, and exposed to either 8 or 16 hours of light each day. You monitor the height of the plants for four weeks. You observe that increasing ammonium nitrate and light both increase plant height.
-In this experiment,you are working with available planter pots from the laboratory.You have choices of clay pots of different sizes,as well as biodegradable peat pots and others within lab equipment provided.To establish a standardized variable,you would

• A) monitor the strawberry growth rates and determine a mathematical correction to account for the type and size of pot used.
• B) report the pot type used, though recognizing the pot is not as important as fertilizer and light to the strawberries.
• C) select all sixteen pots to be of the same material and size for the experiment.
• D) choose clay pots for the fertilized plants, and biodegradable pots for the unfertilized plants.

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