Mon Prof Augmenté
Plant Signal Path
A plant can pass a quick electrical signal from cell to cell through its tissues. This signal can travel from a damaged leaf down the stem toward the roots.
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In the picture
- A glowing pulse in a stem channel: the electrical signal moving through plant tissue.
- A junction between two plant cells: the point where the signal passes from one cell to the next.
- A torn leaf edge: the damaged spot that starts the signal.
Examples
- A leaf touched by a falling twig sends a signal along the stem.
- A caterpillar bite on a leaf starts a fast internal message.
Key takeaways
- Plant cells can pass electrical signals from one to the next.
- These signals help a plant react to light, touch, or damage.
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