Describe the plant species and its importance. Explain the context or the problem being addressed and the need for the research experiment (tolerance of pollution of mung bean Vigna radiata crops).

ByJamez

Assignment Overview

  1. Describe the plant species and its importance. Explain the context or the problem being addressed and the need for the research experiment (tolerance of pollution of mung bean Vigna radiata crops).
  2. Explain the scientific background of the topic and relevant concepts (tolerance limits of NaCl in mung beans Vigna radiata) within the context of the experiment.
  3. Provide fully labelled diagrams where possible (Figure 1 – with detailed description).
  4. State the aim of the investigation, including both the independent and dependent variables.
  5. Summarise the investigation, including what is being tested and how (2–3 sentences, future tense).
  6. Use in-text references and Harvard-style referencing (in-text and end-text). Avoid unreliable sources.

Hypothesis Section

  1. State the hypothesis.
  2. Identify the independent variable (include units).
  3. Identify the dependent variable (include units).

Factors Held Constant

  1. For each factor held constant, describe its effect on the results if not held constant, using examples.
  2. Identify factors that cannot be held constant and explain why.
  3. Present the factors in table form if preferred.

Analysis and Interpretation – Questions

  1. Explain, by referring to the graph (line of best fit), whether your hypothesis was supported or not.
  2. Describe major trends in the results (focus on trendline, include data values).
  3. Discuss the anomalous 0.1% sodium chloride trial (0 mm growth).
  4. Link explanations to scientific theory from the introduction, with in-text referencing and diagrams.

Evaluation – Questions

  1. Identify and discuss any evidence of random error or unexpected results in graph or table data.
  2. Comment on overall precision and reliability of the results (scatter, range, deviations).
  3. Identify the most significant random errors and explain their effect on results.
  4. State your sample size and discuss its influence on reliability.
  5. Discuss accuracy of data (compare to scientific sources or similar studies).
  6. Identify systematic errors and explain how they consistently affected the results.
  7. Discuss the importance of repeating the experiment with different apparatus and what results would indicate systematic error.

Investigation Limitations – Question

  1. Describe the limitations of the investigation (conditions, materials, equipment, sample, sample size).

Conclusion – Questions

  1. State whether the hypothesis was supported or not supported.
  2. Summarise what the results showed and did not show, using data as evidence.
  3. Summarise the limitations of the investigation and evaluate overall confidence in the conclusion (consider errors, sample size, reliability, validity).

Summary of Assessment Requirements

The assessment requires students to design and report on a scientific investigation examining the tolerance of mung bean (Vigna radiata) crops to pollution, specifically the effects of different NaCl concentrations on seedling growth.

Students must:

Introduction Requirements

  • Describe the selected plant species and outline its agricultural importance.
  • Explain the context of the investigation, focusing on pollution tolerance in mung beans.
  • Provide the scientific background of NaCl tolerance and related biological concepts.
  • Include a fully labelled scientific diagram (Figure 1) with a detailed description.
  • Clearly state the aim, identifying independent and dependent variables.
  • Summarise what the investigation will test and how it will be conducted (2–3 sentences, future tense).
  • Use Harvard-style referencing with reliable scientific sources.

Hypothesis Section

  • Present a testable hypothesis.
  • Identify the independent variable (with units).
  • Identify the dependent variable (with units).

Factors Held Constant

  • List all constant factors and describe how each could affect results if not controlled.
  • Identify factors that cannot be held constant and explain why.
  • Present the information in a table (optional).

Analysis & Interpretation

  • Determine whether the hypothesis was supported by using the best-fit line on the graph.
  • Describe major trends using data values.
  • Discuss the anomalous 0.1% NaCl trial.
  • Link findings to relevant theories from the introduction, with references and diagrams.

Evaluation

  • Identify random errors and unexpected results.
  • Comment on precision and reliability (scatter, deviations, range).
  • Identify major random errors and explain how they impacted results.
  • Discuss sample size and its influence on reliability.
  • Comment on the accuracy of data compared to scientific research.
  • Identify systematic errors and explain how they consistently affected results.
  • Describe why repeating the experiment with different apparatus is important.

Investigation Limitations

  • Describe limitations relating to materials, equipment, conditions, sample type, and sample size.

Conclusion

  • State whether the hypothesis was supported.
  • Summarise findings using data evidence.
  • Identify what the investigation did or did not show.
  • Summarise limitations and evaluate confidence in the conclusion

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