12. (a)
(i) What is meant by the term photosynthesis?
(ii) A gas from the air is needed for photosynthesis - Leaving Cert Biology - Question 12 - 2011
Question 12
12.
(a)
(i) What is meant by the term photosynthesis?
(ii) A gas from the air is needed for photosynthesis.
(iii) Name this gas.
(b)
(i) Write a balanced... show full transcript
Worked Solution & Example Answer:12. (a)
(i) What is meant by the term photosynthesis?
(ii) A gas from the air is needed for photosynthesis - Leaving Cert Biology - Question 12 - 2011
Step 1
What is meant by the term photosynthesis?
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Answer
Photosynthesis is the method by which plants make their own food using sunlight, carbon dioxide, and water.
Step 2
A gas from the air is needed for photosynthesis. Name this gas.
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Answer
The gas needed for photosynthesis is carbon dioxide (CO₂).
Step 3
Write a balanced equation for photosynthesis.
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Answer
The balanced equation for photosynthesis is:
ightarrow C_6H_{12}O_6 + 6O_2$$
Step 4
What is the role of chlorophyll in photosynthesis?
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Answer
Chlorophyll's role in photosynthesis is to absorb light energy and convert it to chemical energy, which is essential for the synthesis of glucose.
Step 5
Name any two environmental factors affecting photosynthesis that could be investigated using the apparatus shown.
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Answer
Two environmental factors that could be investigated are:
Carbon dioxide concentration
Light intensity
Step 6
How would you measure the rate of photosynthesis using the apparatus below?
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Answer
The rate of photosynthesis can be measured by counting the number of bubbles produced (representing oxygen production) within a fixed time period.
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