IB Biology SL 4.1.4 Capture-mark-release-recapture Question Bank
Practise IB Biology SL 4.1.4 by using marking, mixing and recapture data to estimate population size with the Lincoln index.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Explain how marking, mixing and recapturing animals allow population size to be estimated with the Lincoln index.
- Use capture and recapture data to calculate or interpret a population estimate and assess sampling conditions.
C4.1.4—Capture-mark-release-recapture question 1
The image shows a castor bean tick (Ixodes ricinus) which is commonly found in woodlands or forest areas. This tick can carry bacteria that cause Lyme disease in humans.
Explain how the capture-mark-release-recapture method could be used to estimate the size of a tick population.
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