IGCSE Biology (0970) — 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 A–D; the boxes on the right contain names of some parts (bone,…

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 the part labelled X (phloem). Circle two substances transported by the part labelled X in Fig. 4.1. amino acids cellulose…

Fig. 5.1 shows a pyramid of numbers for a food chain: snake (2 organisms), tree frog (10), banana weevil (60), banana plant (1). Write the food chain for the pyramid of numbers…

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. Table 7.1 shows the names of some of the organs in Fig. 7.1, the identifying letters of some of…

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 X and Y are labelled. Identify…