15. (a) (i) Name the growth response in which plant stems grow towards light - Leaving Cert Biology - Question 15 - 2022
Question 15
15. (a) (i) Name the growth response in which plant stems grow towards light.
(ii) How do plants benefit from increased light intensity?
(iii) Name another environme... show full transcript
Worked Solution & Example Answer:15. (a) (i) Name the growth response in which plant stems grow towards light - Leaving Cert Biology - Question 15 - 2022
Step 1
Name the growth response in which plant stems grow towards light.
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Answer
The growth response in which plant stems grow towards light is known as phototropism.
Step 2
How do plants benefit from increased light intensity?
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Answer
Plants benefit from increased light intensity as it enhances the process of photosynthesis, leading to greater production of food and energy, which in turn supports overall plant growth.
Step 3
Name another environmental factor that regulates plant growth.
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Answer
Another environmental factor that regulates plant growth is temperature.
Step 4
Name the tissues labelled A and B.
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Tissue A is dermal tissue and tissue B is ground tissue.
Step 5
State a function for each of the tissues you named at part (b) (i) above.
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Answer
The function of dermal tissue (A) is to protect the plant, while the function of ground tissue (B) is to provide support and store nutrients.
Step 6
Name the structure labelled C.
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The structure labelled C is a vascular bundle.
Step 7
Name the cells found in structure C that transport water.
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The cells found in structure C that transport water are xylem vessels or xylem tracheids.
Step 8
State one way in which a section through a root would be different from the section above.
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Answer
A section through a root would differ as it would typically feature vascular tissue located in a central core, unlike in stems where vascular bundles are arranged in a ring.
Step 9
State one reason why the diagram above represents a section through a dicotyledon plant stem.
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Answer
The diagram represents a section through a dicotyledon plant stem because it shows vascular tissue arranged in a ring, which is characteristic of dicotyledons.
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