The students were given permission to remove some green plants from the habitat to take back to their school laboratory - Junior Cycle Science - Question c, d, e - 2019
Question c, d, e
The students were given permission to remove some green plants from the habitat to take back to their school laboratory. They did this in order to investigate factor... show full transcript
Worked Solution & Example Answer:The students were given permission to remove some green plants from the habitat to take back to their school laboratory - Junior Cycle Science - Question c, d, e - 2019
Step 1
Name one factor which could affect photosynthesis and which you might investigate.
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Answer
One factor that could affect photosynthesis is the amount of light available to the plants. This can be investigated by varying the light intensity during the experiment.
Step 2
List two factors which you would keep constant (fixed) during the experiment to ensure that it is a fair test.
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Answer
Temperature: Keeping the temperature constant ensures that it does not influence the rate of photosynthesis.
Amount of carbon dioxide available: This should be kept constant to isolate the effect of light intensity on photosynthesis.
Step 3
Write a suitable hypothesis for this experiment.
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The hypothesis for this experiment could be: As the light intensity increases, the rate of photosynthesis will also increase, due to the higher amount of light energy available for the photosynthetic process.
Step 4
Draw a labelled diagram of the setup of your experiment.
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Answer
The diagram should include the following elements: the light source, the plant being tested, a ruler to measure light distance, a thermometer to monitor temperature, and gas collection apparatus to measure the rate of photosynthesis (oxygen production). Ensure that all parts are clearly labelled.
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