IGCSE Biology (0610) — May–June 2023, Paper 31

Describe the meaning of the term species.

Fig. 2.1 is a diagram of a human tooth with parts labelled A, B, C and D. The boxes on the left contain the letters identifying the parts in Fig. 2.1; the boxes on the right…

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.

Fig. 4.1 is a diagram of a cross-section of a root, with a tissue labelled X (the central vascular tissue, including phloem). Circle two substances transported by the part…

Fig. 5.1 shows a pyramid of numbers for a food chain. The bars, from base to top, are: banana plant (1 organism), banana weevil (60), tree frog (10), snake (2). Write the food…

Fig. 6.1 is a graph that shows the concentration of dissolved oxygen in the water at increasing distances along a river. Untreated sewage is released into the river (marked on the…

Fig. 7.1 is a diagram showing some of the organs in the human body (labelled A–F, not to scale). Table 7.1 shows the names of some organs, the identifying letters and their…

Fig. 8.1 is a diagram representing a reflex action. When the knee is tapped with a small rubber hammer, the leg will immediately straighten. Parts of the reflex arc are labelled X…