Osmosis is the net movement of molecules by diffusion through a partially permeable membrane.
Diffusion through Plants:
1. Water is absorbed by the plant by the root hair cells which have a large surface area to take in water
2. The water then diffuses through the plant up to the leaves
3. When it reaches the leaves, water can then be lost by Transpiration.
Plants use water to:
- Keep their leaves cool
- Transport minerals
- Photosynthesise
- Keep cells firm and the plant supported.
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