A student conducted an experiment to prove that decreasing light intensity reduc

Question

A student conducted an experiment to prove that decreasing light intensity reduces the rate of photosynthesis in an Elodea plant. The observations were recorded as given below.

Which of the following is a dependent variable in the above experiment?

Quantity of water used

Distance of plant from the light source

Duration of the experiment

Rate of production of oxygen bubbles

Quantity of water used

Distance of plant from the light source

Duration of the experiment

Rate of production of oxygen bubbles

Oxvgen Bubbles produced bv an Elodea plant Distance of Elodea plant Production of Oxygen from the light source (cm) Bubbles/ Minute 10 20 30 40 40 20 10

Explanation / Answer

Answer:

Rate of production of oxygen bubbles

Explanation:

Dependent Variable: A dependent variable is what you measure in the experiment and what is affected during the experiment. The dependent variableresponds to the independent variable. It is calleddependent because it "depends" on the independentvariable. In this experiment, rate of production of oxygen bubbles depends on distance of plant from the light source.

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