Variation and selection — IGCSE Sciences - Co-Ordinated (0654) questions by topic
Reading a birth-mass frequency graph, describing what happens to bacteria as antibiotic resistance develops across two stages, and defining the term variation itself are the core demands of the 5 variation and selection questions from 2023 and 2024, worth 9 or 10 marks.
State, define and complete top the command words, with identify and order used for sequencing or classifying data from a graph. Because defining a biological term precisely is often worth as much as interpreting a graph, drill both the definition and graph-reading questions here and submit for instant marking, so any vague wording in a definition is tightened before it costs marks in a full paper.
October–November 2024, Paper 32
Scientists record the mass of each baby at birth in one country. The results are shown in Fig. 10.1 (frequency against mass at birth / g, 0 to 4000 g). Complete the sentences…
Answer this question and get it marked →October–November 2024, Paper 33
Scientists record the mass of each baby at birth in one country. The results are shown in Fig. 10.1 (frequency against mass at birth / g, 0 to 4000 g). Complete the sentences…
Answer this question and get it marked →May–June 2023, Paper 32
A school investigates variation in one class. Define the term variation.
Answer this question and get it marked →May–June 2023, Paper 33
A school investigates variation in one class. Define the term variation.
Answer this question and get it marked →May–June 2023, Paper 41
Fig. 7.1 shows the development of a strain of antibiotic resistant bacteria (stage 1: antibiotic given; stage 2). Describe what happens to the bacteria during stage 1 in Fig. 7.1.
Answer this question and get it marked →Other IGCSE Sciences - Co-Ordinated topics
- Practical skills (146)
- Motion, forces and energy (41)
- Organic chemistry (16)
- Electricity and magnetism (15)
- Waves (14)
- Reproduction (13)
- Nuclear physics (13)
- Coordination and response (12)
- Organisms and their environment (12)
- Metals (11)
- Atoms, elements and compounds (10)
- Stoichiometry (9)