- Are a store of lots of seeds from lots of different species of plant
- Help to conserve biodiversity by storing the seeds of endangered plants, and conserve genetic diversity (for some species, they store a range of seeds from plants with different alleles)
If plants becme extinct in the wild, stored seeds can be used to grow new plants.
The work of seed banks involve:
- creating cool, dry conditions needed for storage (meaning seeds can be stored for a long time)
- testing seeds for viability (the ability to grow into a plant) seeds are planted, grown and new seeds are harvested to put back into storage
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