Plant roots absorb nitrate ions from the soil. Which statement explains why a plant that is short of nitrate ions shows stunted growth?
Less protein is made, so fewer new plant cells can be built
Less chlorophyll is made, so less light energy can be absorbed
Less glucose is made, so less energy can be released in cells
Less cellulose is made, so the cell walls cannot be made strong
58 exam-style questions on AQA GCSE Biology 3.3 Plant disease, covering 3.3.1 Detection and identification of plant diseases and 3.3.2 Plant defence responses. Each one has a worked solution and a mark scheme showing where the marks go.