Organisms use various systems and processes to transport substances around their bodies.
The words in the list are processes, tissues, and blood vessels in animals and plants.
Answer parts (i), (ii), and (iii) using words from this list.
(i) Name the blood vessel that carries deoxygenated blood from the right ventricle of the heart to the lungs. (ii) Name the plant tissue that transports water and dissolved mineral ions upwards from the roots. (iii) Name the blood vessel that carries oxygenated blood from the lungs back to the left atrium of the heart.
The substances transported around an organism enter or leave cells by active transport, diffusion, or osmosis.
Decide which method of transport is used for each process. Copy the table or select the correct cell for each row:
| Process / Substance movement | Active transport | Diffusion | Osmosis |
|---|---|---|---|
| Carbon dioxide moving from respiring body cells into the blood | |||
| Glucose being absorbed from a lower concentration in the small intestine into the blood | |||
| Water moving from the soil into root hair cells |
17 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.