Learning objective
Apply safe and valid practical design to plant-response investigations, including control variables, repeats, light direction and gravity treatment.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Plant hormones (biology only)
Subtopic
Control and coordination
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Quick explanation
Apply safe and valid practical design to plant-response investigations, including control variables, repeats, light direction and gravity treatment
- This point belongs to Plant hormones (biology only), especially Control and coordination.
- You need to be able to apply safe and valid practical design to plant-response investigations, including control variables, repeats, light direction and gravity treatment.
- The key ideas to know are light and gravity.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Control and coordination to exam-style questions, flashcards, and revision notes for Plant hormones (biology only).
Quick student answer
What are the variables in the safe and valid practical design to plant-response investigations, including control variables, repeats, light direction and gravity treatment?
Direct answer
In Biology, this page helps you handle practical questions about safe and valid practical design to plant-response investigations, including control variables, repeats, light direction and gravity treatment in Plant hormones (biology only). Focus on the independent, dependent and control variables, the method, and how the evidence supports a conclusion. Key terms to check are control variables and light direction.
Key terms
- control variables: Factors that are kept constant during an experiment to ensure that the results are valid.
- light direction: The orientation from which light is provided to plants, influencing their growth responses.
Common trap
Ignoring Control Variables: Ensure to list all control variables and explain their importance in maintaining the validity of the experiment.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Describe plant hormones as chemicals that coordinate and control plant growth and responses.
Control and coordination
- Explain that plants respond to light and gravity using unequal distributions of plant hormones.
Control and coordination
- Describe phototropism as a plant growth response to light.
Control and coordination
- Describe gravitropism, or geotropism, as a plant growth response to gravity.
Control and coordination
- Explain how unequal distribution of auxin causes unequal growth in shoots and roots.
Control and coordination