- Show pupils sets of varieties of food crops,
eg plum, beefsteak and cherry tomatoes; curly, cos and iceberg lettuces, and explain that selective breeding is also used to produce new plant varieties. Ask pupils to think about less obvious characteristics which may be important to plant breeders,
eg resistance to cold, so crops can be planted early; sweetness, colour and texture in fruit crops; long shelf life for supermarket trade and overseas shipping. Help pupils to produce a list of characteristics that selective breeding of plants might achieve.
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- identify differences in visible characteristics in varieties of food crops
- suggest other characteristics that might be desirable
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