Biology › Section L · Plant form and physiology › Topic L.2
Roots
The hidden half of a plant: roots anchor it, feed it, and stockpile its food - with a built-in security checkpoint that screens everything going in.
In this topic
- Three jobs below ground
- Tap versus fibrous
- The root tip: cap and three zones
- Root hairs: the absorption upgrade
- Inside: cortex and pith
- The checkpoint: endodermis and Casparian strip
- Pericycle and the two vascular layouts
- Roots that break the mould
- Worked example: the dandelion that comes back
- Worked example: why force water through a membrane?
- Common mistakes to avoid
- Key takeaways
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