Practise plant selective breeding by combining desired traits, increasing crop yield and explaining why plant breeding can be faster.
Selective breeding has been used to develop modern varieties of wheat.
Describe how scientists could use selective breeding to increase wheat yield.
During a long-term study of selective breeding, scientists collected data for the mean yield of wheat in tonnes per hectare.
The table shows the scientists' data.
Dwarf wheat has a shorter, thicker stem than the old variety.
Suggest why growing dwarf wheat is an advantage for farmers.