The diagram shows a section through part of a leaf - Leaving Cert Agricultural Science - Question b - 2008
Question b
The diagram shows a section through part of a leaf.
(i) Name the cells labelled A, B, C, D.
(ii) Give two features of the leaf that are related to its role in phot... show full transcript
Worked Solution & Example Answer:The diagram shows a section through part of a leaf - Leaving Cert Agricultural Science - Question b - 2008
Step 1
Name the cells labelled A, B, C, D.
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Answer
A = epidermal (cell), B = palisade (cell), C = spongy (cell), D = guard cell.
Step 2
Give two features of the leaf that are related to its role in photosynthesis.
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Answer
Chloroplasts are present in the palisade layer, which is located near the upper surface of the leaf, allowing for maximum light absorption.
The spongy mesophyll allows for a greater surface area for gas exchange, facilitating the absorption of carbon dioxide and release of oxygen.
Step 3
Name two gases that may leave the leaf through the stoma.
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Answer
Water vapour
Oxygen
Step 4
Write a balanced chemical equation for the process of photosynthesis.
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Answer
ightarrow C_6H_{12}O_6 + 6O_2$$
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