The diagram shows a section through a leaf - Leaving Cert Biology - Question b - 2017
Question b
The diagram shows a section through a leaf.
(i) Name the green pigment present in leaves that is essential for photosynthesis.
(ii) Name the cell structures, prese... show full transcript
Worked Solution & Example Answer:The diagram shows a section through a leaf - Leaving Cert Biology - Question b - 2017
Step 1
Name the green pigment present in leaves that is essential for photosynthesis.
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Answer
The green pigment present in leaves that is essential for photosynthesis is called Chlorophyll.
Step 2
Name the cell structures, present in large numbers in the cells labelled A that are needed for photosynthesis.
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Answer
The cell structures present in large numbers in the cells labelled A that are needed for photosynthesis are Chloroplasts.
Step 3
Name the opening labelled B that is used for gas exchange.
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Answer
The opening labelled B that is used for gas exchange is known as the Stoma.
Step 4
Name the cells labelled C that control the opening of B.
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Answer
The cells labelled C that control the opening of B are referred to as Guard cells.
Step 5
Name the gas in the air that is needed for photosynthesis.
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Answer
The gas in the air that is needed for photosynthesis is Carbon dioxide.
Step 6
In photosynthesis, water is split into three parts.
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In photosynthesis, water is split into three parts to produce protons (H⁺), electrons, and oxygen.
Step 7
From your knowledge of photosynthesis, suggest two ways of improving the rate of photosynthesis of plants in a greenhouse.
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Answer
Two ways of improving the rate of photosynthesis in a greenhouse are:
Brighter light to enhance light intensity for photosynthesis.
More carbon dioxide to increase the availability of this essential reactant.
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