Question 1
FA farmer grows lettuces in a greenhouse. The lettuces are not grown in soil.
The Figure shows how the lettuces are grown.
Figure
a.[1]
Use a word from the list to name this method of growing plants.
biological control genetic engineering hydroponics selective breeding
b.[1]
The liquid contains the mineral ions that the lettuces need.
Give the letter of the part that stores this liquid.
c.[1]
Choose the mineral ion from the list that the lettuces need to make proteins.
chloride iodide nitrate sodium
d.[1]
Give one advantage of growing lettuces in this way, rather than in soil.
6.2 Feeding the human race Questions
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.