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Edexcel IGCSE Biology 5.3 Fertilisers and Crop Yield Questions

Practise fertiliser questions by linking mineral ions to plant growth, plotting dry-mass data and explaining why extra fertiliser stops helping.

Syllabus
First assessment 2019
Course
Biology 4BI1

Exam points

  • Link nitrate or magnesium in fertilisers to proteins, chlorophyll, photosynthesis and yield.
  • Interpret seedling dry-mass graphs and explain why dry mass gives a fair comparison.
  • Explain why extra fertiliser may not raise yield further, including washing away or wilting.

Edexcel IGCSE Biology 5.3 Fertilisers and Crop Yield Questions question 1

[Maximum number: 1]

Using the recommended amount of fertiliser on a crop increases crop yield. Some farmers think that adding extra fertiliser will give an even greater crop yield.

Give a reason why adding extra fertiliser does not result in an even greater crop yield.

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