CourseCourseConceptConceptDocsDocuments

CAIE IGCSE Biology 1.2.4 Dichotomous Keys Based on Identifiable Questions

Practise following paired choices and constructing statements that identify organisms from visible, contrasting features.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • follow paired feature choices until each labelled organism reaches the correct taxon
  • write observable contrasting statements that separate organisms at one branch
  • identify a paired-choice feature key as a dichotomous key

CAIE IGCSE Biology 1.2.4 Dichotomous Keys Based on Identifiable Questions question 1

[Maximum number: 2]

Fig. 1.1 shows four arthropods.

Fig. 1.1

Fig. 1.1

Fig. 1.2 is a dichotomous key for the arthropods shown in Fig. 1.1.

Complete Fig. 1.2 by writing suitable statements in:
- box 2 to identify species B
- box 3 to separate species C and A.

Fig. 1.2

Fig. 1.2

All question bank results loaded