The diagram below shows the internal structure of a leaf - Leaving Cert Biology - Question 6 - 2010
Question 6
The diagram below shows the internal structure of a leaf.
(i) Name the one tissue type that is found at both V and Y.
(ii) The cells at W contain many organelles t... show full transcript
Worked Solution & Example Answer:The diagram below shows the internal structure of a leaf - Leaving Cert Biology - Question 6 - 2010
Step 1
Name the one tissue type that is found at both V and Y.
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Answer
The tissue type found at both V and Y is the epidermal tissue.
Step 2
The cells at W contain many organelles that carry out photosynthesis. Suggest why the cells at W contain more of these organelles than the cells at X.
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Answer
The cells at W are usually closer to the light, which increases the need for photosynthesis and thus requires more organelles such as chloroplasts.
Step 3
In layer X, gases can diffuse throughout the leaf. Name one such gas.
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Answer
One gas that can diffuse in layer X is oxygen, or alternatively, water vapor.
Step 4
State one function of the opening at Z.
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One function of the opening at Z is to allow gas exchange or transpiration control.
Step 5
Name the cells which are responsible for controlling the size of the opening at Z.
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Answer
The cells responsible for controlling the size of the opening at Z are guard cells.
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