Biology › Section L · Plant form and physiology › Topic L.5
Plant senses and responses
A plant cannot run or hide — so it senses: light, gravity, and touch, met with chemical signals that bend its growth and arm its defences.
In this topic
- Rooted, but not helpless
- The phytochrome light switch
- Worked example: The midnight flash
- Blue light and the bending stem
- Gravity: falling stones inside cells
- Worked example: A potted seedling knocked on its side
- Auxin and cytokinin
- GA, ABA, and the ripening gas
- Three answers to touch
- Fighting back without fleeing
- Common mistakes to avoid
- Key takeaways
This topic is part of Wuanberri Pro. Checking your access…