The diagram shows part of the under surface of a leaf as seen through the microscope - Leaving Cert Biology - Question 4 - 2004
Question 4
The diagram shows part of the under surface of a leaf as seen through the microscope. A is an aperture. B and C are cells.
Name A, B, C.
A ........................... show full transcript
Worked Solution & Example Answer:The diagram shows part of the under surface of a leaf as seen through the microscope - Leaving Cert Biology - Question 4 - 2004
Step 1
A
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Answer
A = stoma
Step 2
B
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Answer
B = guard cell
Step 3
C
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Answer
C = (epidermal) cell
Step 4
What is the function of A?
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Answer
The function of A (stoma) is to allow movement (exchange) of gases, such as carbon dioxide (CO₂), or water vapor, facilitating processes like transpiration.
Step 5
Name a factor that influences the diameter of A.
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A factor that influences the diameter of A is the turgor pressure in the guard cells surrounding the stoma.
Step 6
Name the apertures in stems that are equivalent to A.
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The apertures in stems that are equivalent to A are lenticels or stomata.
Step 7
Name a plant in which the leaves are modified for food storage.
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A suitable example of a plant is onion, tulip, daffodil, or cabbage.
Step 8
Name a carbohydrate that you would expect to find in the modified leaves of the plant that you named above.
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The carbohydrate expected in the modified leaves is starch, sucrose, cellulose, or fructose.
Step 9
Name a type of modified stem that functions in food storage.
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A type of modified stem that functions in food storage is a rhizome, corm, or tuber.
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