Question

How does music affect plant growth? To answer this question, Dr. Anderson set up an experimental chamber and exposed a group of 15 bean plants to the same 60-minute rock CD twice a day, at 9:00 A.M. and 9:00 P.M. Another group of 15 bean plants was placed in a different chamber with the same temperature, light, and humidity, but these plants weren't exposed to music. One month later, the heights and masses of all 30 plants were measured and compared. In this example, what's the independent variable? Question 3 options: The light The use of music The temperature The time the experiment was conducted

Answer 1

The height of the plants

Step-by-step explanation:

The responding variable is the result of the change in the experimental group as a result of the manipulated variable. In this experiment, the researcher is intentionally adding music to one of the groups to see if the growth will be affected. So, the height of the plants is the responding variable. Since the temperature and light were the same in both groups, these are controlled variables.

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Answer 2

The use of music

Step-by-step explanation:

The independent variable in the example is the use of music.

The independent variable in research or experiment is a variable whose value is not affected by any other variable. That is, the value of an independent variable is not influenced by any other variable.

In this case, the use of music stands alone and is not influenced by any other variable in the experiment. In actual fact, the use of music's effect is being tested in the experiment and hence, is not in itself influenced by any other variable.