ConceptConceptDocsDocuments

CAIE IGCSE Biology 18.1.5 Investigating Continuous & Discontinuous Variation

Practise collecting, calculating and presenting measurements or categories to investigate continuous and discontinuous variation.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • collect continuous measurements with units and group them into suitable class intervals
  • calculate a mean or range and plot a frequency graph for measured variation
  • record discontinuous categories as counts and display them without inventing intermediate values

18.1.5—Examples of continuous question 1

[Maximum number: 2]

An ecologist studied variation in a species of xerophyte.

The ecologist also measured other features of the leaves.

Fig. 5.2 shows the variation in leaf feature B.

Fig. 5.2

Fig. 5.2

State two named features of leaves that show the type of variation shown in Fig. 5.2.
1

2

All question bank results loaded