Some crop plants have been genetically engineered to be resistant to a herbicide (weedkiller). Which is a possible risk of growing these crops?
The herbicide will no longer kill the insect pests that eat the crop.
People who eat the crop will become resistant to the herbicide.
The gene could spread to wild plants, making weeds hard to kill.
The crop will need more fertiliser because it grows more slowly.
127 exam-style questions on OCR GCSE Biology 6.2 Feeding the human race, covering 6.2.1 Biological factors affecting food security, 6.2.2 Agricultural solutions to growing demand, 6.2.3 Selective breeding, 6.2.4 Genetic engineering, 6.2.5 Steps in genetic engineering, 6.2.6 Benefits and risks of gene technology in agriculture, and 6.2.7 Biotechnological solutions to growing demand. Each one has a worked solution and a mark scheme showing where the marks go.