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Describe a laboratory or field experiment to assess the effect of a named major mineral element on plant growth - Leaving Cert Agricultural Science - Question b - 2007
Question b
Describe a laboratory or field experiment to assess the effect of a named major mineral element on plant growth. State the role in the plant of the element you have... show full transcript
Worked Solution & Example Answer:Describe a laboratory or field experiment to assess the effect of a named major mineral element on plant growth - Leaving Cert Agricultural Science - Question b - 2007
Step 1
Describe a laboratory or field experiment to assess the effect of a named major mineral element on plant growth.
Answer
To assess the effect of nitrogen on plant growth, a controlled experiment can be conducted using two sets of plant pots, each containing identical soil and plants.
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Setup: Prepare two groups of young plants, ensuring they are of the same species and similar growth stage.
- One group will be treated with a nitrogen-rich fertilizer (experimental group).
- The other group will act as a control, receiving no nitrogen fertilizer.
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Procedure: Place both groups in similar environmental conditions (light, humidity, and temperature).
- Ensure both groups receive equal amounts of water and are in the same location.
- Allow a specified growth period, such as four weeks, while regularly monitoring the plants.
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Measurement: At the end of the growth period, measure the height of the plants and observe any differences in color or overall health.
- Record and compare values to assess the effect of nitrogen on growth.
Step 2
State the role in the plant of the element you have named.
Answer
Nitrogen plays a crucial role in plants as it is a key component of chlorophyll, the green pigment essential for photosynthesis. Additionally, nitrogen is a vital part of amino acids, which are the building blocks of proteins necessary for plant structure and growth.
By facilitating protein synthesis, nitrogen supports leaf and overall plant growth, making it essential for healthy plant development.