Biology A-Level
Positive and negative responses
What Positive and negative responses means in Biology A-Level, as defined for OCR.
Definition of Positive and negative responses
Check what you remember
Read the wording for your board, then hide it and explain Positive and negative responses in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Shoots show positive phototropism and negative geotropism, while roots show positive geotropism.
Topics that use Positive and negative responses
- Plant and animal responses (OCR A-Level)
Related terms
- Adrenaline and fight-or-flight
- Autonomic control of heart rate
- Autonomic nervous system
- Auxin
- Auxin (IAA)
- Auxins
- Cerebrum
- Comparison of muscle tissue types
Using Positive and negative responses in the exam
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