Biology › Section L · Plant form and physiology › Topic L.3
Leaves
Leaves are a plant's food factories — layered, veined, and endlessly reshaped by evolution to balance two competing needs: catching sunlight and keeping water in.
In this topic
- The photosynthetic engine
- Parts of a typical leaf
- Phyllotaxy: arrangement on the stem
- Simple versus compound leaves
- Worked example: identifying a specimen
- Epidermis, cuticle, and guard cells
- Mesophyll: the middle layers
- Leaf veins
- Leaf adaptations
- Worked example: the path of one carbon dioxide molecule
- Common mistakes to avoid
- Key takeaways
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