Explain the term photosynthesis - Leaving Cert Biology - Question c - 2016
Question c
Explain the term photosynthesis.
The apparatus shown below may be used to investigate the effect of environmental factors on the rate of photosynthesis.
1. Name on... show full transcript
Worked Solution & Example Answer:Explain the term photosynthesis - Leaving Cert Biology - Question c - 2016
Step 1
Explain the term photosynthesis.
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Answer
Photosynthesis is the process by which plants manufacture their own food. It transforms light energy into chemical energy, utilizing carbon dioxide and water to produce glucose and oxygen.
Step 2
Name one environmental factor that has an effect on the rate of photosynthesis that could be investigated using the apparatus shown.
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Answer
One environmental factor is light intensity.
Step 3
How would you vary this factor?
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Answer
To vary light intensity, you can change the distance between the light source and the apparatus. As the distance increases, the intensity of light that reaches the plant will decrease.
Step 4
How would you measure the rate of photosynthesis?
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Answer
The rate of photosynthesis can be measured by counting the number of bubbles produced by the plant over a specific time period or by measuring the volume of oxygen released in a given time.
Step 5
Suggest two ways by which a gardener could artificially increase the yield of vegetables in a greenhouse.
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Answer
Use brighter light for longer periods to enhance photosynthesis.
Increase temperature to optimize the conditions for plant growth.
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