Transport in animals — IGCSE Biology (0970) questions by topic
Heart chambers and blood vessels dominate transport in animals here: marking the left atrium on a labelled cross-section, identifying the left ventricle, matching blood components to their functions, and tracing vessels between lungs, heart and kidneys by direction of flow.
State, choose, identify, describe and draw carry marks from 1 to 14 across 39 real questions from 2023 to 2025 papers. Because so many marks depend on reading a diagram correctly rather than recalling free text, working through labelled figures and submitting each answer for instant marking catches a mislabelled vessel or reversed flow direction before it repeats across several related questions.
May–June 2025, Paper 11
The diagram shows the blood vessels between the lungs, heart and kidneys in a human. The arrows indicate the direction of blood flow. Four vessels are labelled: A 'coronary…
Answer this question and get it marked →May–June 2025, Paper 12
The diagram shows a simplified circulatory system in humans as four boxes labelled organ A, organ B, organ C and organ D connected by arrows showing the direction of blood flow.…
Answer this question and get it marked →Which blood vessel transports blood from the lungs to the heart? A aorta B pulmonary artery C pulmonary vein D vena cava
Answer this question and get it marked →May–June 2025, Paper 21
In a fish, what is the sequence of structures that blood passes through after it leaves the heart? A gills → muscles → heart B gills → heart → muscles → heart C muscles → gills →…
Answer this question and get it marked →May–June 2025, Paper 22
What is an advantage of a double circulatory system? A It allows the mixing of oxygenated and deoxygenated blood. B It can keep blood pressure high in the lungs. C Less carbon…
Answer this question and get it marked →Which structure in the heart separates oxygenated and deoxygenated blood? A atrioventricular valve B muscle wall of left atrium C semilunar valve D septum
Answer this question and get it marked →Which row shows the features of a vein? relative thickness of the wall to total vessel diameter diameter of the lumen presence or absence of valves --- --- --- --- A thick large…
Answer this question and get it marked →May–June 2025, Paper 31
Table 6.1 shows some information about three different types of blood vessel. Circle the correct name of the type of blood vessel in each row in Table 6.1. type of blood vessel…
Answer this question and get it marked →May–June 2025, Paper 32
The boxes on the left contain some functions of blood components. The boxes on the right contain the names of some blood components. Draw straight lines from each function to the…
Answer this question and get it marked →May–June 2025, Paper 42
Fig. 2.1 is a photomicrograph of human blood. Several rounded biconcave red blood cells fill most of the field. Label E points to a large white blood cell with a multi-lobed…
Answer this question and get it marked →May–June 2024, Paper 11
What are methods for monitoring the activity of the heart? The table considers ECG, measuring pulse rate and listening to sounds of valves closing (key: ✓ = yes, ✗ = no). A B C D
Answer this question and get it marked →The diagrams show four different types of cells (A, B, C, D; not to scale). Which cell contains haemoglobin? A B C D
Answer this question and get it marked →May–June 2024, Paper 12
Which statement describes the circulation of blood in the human body? A Blood is pumped away from the heart by the atria. B Blood is pumped away from the heart through arteries. C…
Answer this question and get it marked →May–June 2024, Paper 21
What is an advantage of having a double circulatory system? A It uses less energy because blood flows through the heart only once in each circuit around the body. B Concentration…
Answer this question and get it marked →The diagram shows the external structure of the human heart with parts labelled A, B, C and D. Which part is blocked in coronary heart disease? A B C D
Answer this question and get it marked →May–June 2024, Paper 22
Which pathway is taken by blood in a fish? A gills → heart → body → gills B body → gills → heart → body C heart → gills → body → heart D heart → body → gills → body
Answer this question and get it marked →Which component of blood produces antibodies? A plasma B platelets C red blood cells D white blood cells
Answer this question and get it marked →May–June 2024, Paper 32
Complete the description of the human circulatory system. The circulatory system is a system of blood vessels with a ............ and ............ to ensure one-way flow of blood.
Answer this question and get it marked →October–November 2024, Paper 12
The diagram shows part of a blood vessel with a valve inside it, and an arrow showing blood flowing upwards. Which evidence in the diagram shows that it is a vein and not an…
Answer this question and get it marked →The photomicrograph shows two blood cells that are biconcave disc-shaped (red blood cells). What is the function of these cells?
Answer this question and get it marked →October–November 2024, Paper 22
The diagram shows the circulatory system of a fish. Structure X is labelled at the top of the diagram where oxygenated blood comes from. What is the structure labelled X?
Answer this question and get it marked →Which factors increase the risk of developing coronary heart disease? 1 increased age 2 regular exercise 3 smoking 4 stress
Answer this question and get it marked →October–November 2024, Paper 32
Fig. 1.1 is a photomicrograph showing a cross-section of an artery. [Fig. 1.1: Photomicrograph of an artery cross-section showing a circular structure with a thick muscular wall…
Answer this question and get it marked →May–June 2023, Paper 11
Which statements describe how the structures in the circulatory system function? 1 a muscular pump to push blood into vessels 2 valves to ensure one-way blood flow 3 veins to take…
Answer this question and get it marked →The diagram shows a section through the heart with four labelled regions A, B, C and D. Which part is the septum? A B C D
Answer this question and get it marked →May–June 2023, Paper 12
The diagram shows the human heart with labels A, B, C and D. Which label shows the left ventricle? A B C D
Answer this question and get it marked →Which row shows the features of an artery or a vein? Columns: blood vessel; diameter of lumen; thickness of wall. A artery; large; thick B artery; small; thin C vein; large; thin…
Answer this question and get it marked →May–June 2023, Paper 21
Which statements describe how the structures in the circulatory system function? 1 a muscular pump to push blood into vessels 2 valves to ensure one-way blood flow 3 veins to take…
Answer this question and get it marked →The diagram shows a section through the heart with four labelled regions A, B, C and D. Which part is the septum? A B C D
Answer this question and get it marked →May–June 2023, Paper 22
The diagram shows the human heart with labels A, B, C and D. Which label shows the left ventricle? A B C D
Answer this question and get it marked →Which row shows the features of an artery or a vein? Columns: blood vessel; diameter of lumen; thickness of wall. A artery; large; thick B artery; small; thin C vein; large; thin…
Answer this question and get it marked →May–June 2023, Paper 31
Fig. 3.1 is a photomicrograph of a sample of human blood, with cells labelled A and B. Identify and describe the functions of the cells labelled A and B in Fig. 3.1.
Answer this question and get it marked →October–November 2023, Paper 12
What ensures the one-way flow of blood in the human circulatory system? A capillaries B muscles C valves D ventricles
Answer this question and get it marked →In which row is the component of blood correctly linked to its function? Columns: blood component; function. A plasma; transport of carbon dioxide B platelets; phagocytosis C red…
Answer this question and get it marked →October–November 2023, Paper 22
The photomicrograph shows some blood cells, with cell P labelled. What is the function of cell P? A It carries carbon dioxide. B It carries oxygen. C It helps to clot blood. D It…
Answer this question and get it marked →The diagram shows the blood vessels associated with the liver, labelled X, Y and Z (connecting the liver, aorta and small intestine; arrows show direction of blood flow; not to…
Answer this question and get it marked →October–November 2023, Paper 32
Fig. 3.1 is a diagram of a cross-section of a human heart with chambers / vessels labelled A, B, C and D. Draw an X on Fig. 3.1 to identify the position of the left atrium.
Answer this question and get it marked →October–November 2023, Paper 42
Red blood cells are specialised cells that transport oxygen. State the substance in red blood cells that combines with oxygen.
Answer this question and get it marked →Describe two ways in which the circulatory system of a fish is different from the circulatory system of a mammal.
Answer this question and get it marked →Other IGCSE Biology topics
- Human nutrition (75)
- Organisms and their environment (64)
- Coordination and response (62)
- Reproduction (53)
- Organisation of the organism (cells) (50)
- Plant nutrition (42)
- Characteristics and classification of living organisms (40)
- Variation and selection (40)
- Inheritance (39)
- Movement into and out of cells (38)
- Transport in plants (38)
- Respiration (32)