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If a scientist put a plant in a closed, dark box for many days. Then cut a hole in the box and let the plant grow for many more, what are they most likely testing for?
The plant is responding to the stimulus of sunlight.
To control the variable for comparison.
Transpiration
Plant A appreared healthy, but Plant B was wilted.
All plants will grow toward the opening.
The stem growth would begin to turn up and the root growth would begin to turn down.
To investigate how the addition of light affects seedlings grown in the dark.
Repeat investigations many times.
In an experiment two identical plants in identical containers were given equal exposure to sunlight. Plant A received 100 mL of fresh water, plant B received 100 mL of salt water. Which of the following is most likely to happen?
The plant is responding to the stimulus of sunlight.
To control the variable for comparison.
Transpiration
Plant A appreared healthy, but Plant B was wilted.
All plants will grow toward the opening.
The stem growth would begin to turn up and the root growth would begin to turn down.
To investigate how the addition of light affects seedlings grown in the dark.
Repeat investigations many times.
If a scientist put a plant in a closed, dark box for many days. Then cut a hole in the box and let the plant grow for many more, what is the purpose of cutting a hole in the box?
The plant is responding to the stimulus of sunlight.
To control the variable for comparison.
Transpiration
Plant A appreared healthy, but Plant B was wilted.
All plants will grow toward the opening.
The stem growth would begin to turn up and the root growth would begin to turn down.
To investigate how the addition of light affects seedlings grown in the dark.
Repeat investigations many times.
A plant was left by a window for several days. The plant was watered daily. After three days, the plant began to grow towards the window. Which of the following best explains what happened?
The plant is responding to the stimulus of sunlight.
To control the variable for comparison.
Transpiration
Plant A appreared healthy, but Plant B was wilted.
All plants will grow toward the opening.
The stem growth would begin to turn up and the root growth would begin to turn down.
To investigate how the addition of light affects seedlings grown in the dark.
Repeat investigations many times.
Based on your knowledge of phototropism, how do you predict plants would grow if they were placed in a solid box with a hole cut in one end.
The plant is responding to the stimulus of sunlight.
To control the variable for comparison.
Transpiration
Plant A appreared healthy, but Plant B was wilted.
All plants will grow toward the opening.
The stem growth would begin to turn up and the root growth would begin to turn down.
To investigate how the addition of light affects seedlings grown in the dark.
Repeat investigations many times.
What process causes a plant to wilt in response to too much or too little water?
The plant is responding to the stimulus of sunlight.
To control the variable for comparison.
Transpiration
Plant A appreared healthy, but Plant B was wilted.
All plants will grow toward the opening.
The stem growth would begin to turn up and the root growth would begin to turn down.
To investigate how the addition of light affects seedlings grown in the dark.
Repeat investigations many times.
If a plant was knocked on its side and left for several weeks how would the plant's growth change?
The plant is responding to the stimulus of sunlight.
To control the variable for comparison.
Transpiration
Plant A appreared healthy, but Plant B was wilted.
All plants will grow toward the opening.
The stem growth would begin to turn up and the root growth would begin to turn down.
To investigate how the addition of light affects seedlings grown in the dark.
Repeat investigations many times.
What do scientists do to make sure their results are reliable?
The plant is responding to the stimulus of sunlight.
To control the variable for comparison.
Transpiration
Plant A appreared healthy, but Plant B was wilted.
All plants will grow toward the opening.
The stem growth would begin to turn up and the root growth would begin to turn down.
To investigate how the addition of light affects seedlings grown in the dark.
Repeat investigations many times.
Check it!