A researcher follows nitrate ions and sucrose between the roots, leaves and growing tips of a young bean plant. The researcher also follows glucose and urea between the small intestine, liver, kidneys and other body tissues of a person.
Which statement about the routes taken by these substances is correct?
Sucrose moves from the leaves to the growing tips, while urea moves from the liver to the kidneys.
Sucrose moves from the growing tips to the leaves, while glucose moves from the body tissues to the small intestine.
Nitrate ions move from the roots to the leaves, while urea moves from the kidneys to the liver.
Nitrate ions move from the leaves to the roots, while glucose moves from the small intestine to the body tissues.
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.