A student investigates how water, nitrate ions, carbon dioxide and amino acids move between the soil, root hair cells, leaves and growing shoot tips of a sunflower plant.
Which statement from the student's report describes translocation?
Water enters root hair cells from the soil by osmosis.
Carbon dioxide diffuses through air spaces inside the leaves to cells.
Amino acids move in the phloem from leaves to growing shoot tips.
Nitrate ions enter root hair cells from the soil by active transport.
114 exam-style questions on OCR GCSE Biology 2.2 The challenges of size, covering 2.2.1 Exchange surfaces and surface area : volume ratio, 2.2.2 Substances transported in organisms, 2.2.3 The human circulatory system, 2.2.4 The heart and blood vessels, 2.2.5 Red blood cells and plasma, 2.2.6 Uptake of water and mineral ions by plants, 2.2.7 Transpiration and translocation, 2.2.8 Xylem and phloem, 2.2.9 Environmental factors and water uptake, and 2.2.10 Using a potometer. Each one has a worked solution and a mark scheme showing where the marks go.