Biology A-Level
Tropisms
What Tropisms means in Biology A-Level, as defined for OCR.
Definition of Tropisms
Check what you remember
Read the wording for your board, then hide it and explain Tropisms in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Directional growth responses to a unilateral stimulus, such as phototropism to light or geotropism to gravity.
Topics that use Tropisms
- 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 Tropisms in the exam
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